![Guide.in.ua Guide.in.ua](https://guide.in.ua/assets/images/guide300.webp)
- United States
- Alabama
- Alaska
- Arizona
- Arkansas
- California
- Colorado
- Connecticut
- Delaware
- Florida
- Georgia
- Hawaii
- Idaho
- Illinois
- Indiana
- Iowa
- Kansas
- Kentucky
- Louisiana
- Maine
- Maryland
- Massachusetts
- Michigan
- Minnesota
- Mississippi
- Missouri
- Montana
- Nebraska
- Nevada
- New Hampshire
- New Jersey
- New Mexico
- New York
- North Carolina
- North Dakota
- Ohio
- Oklahoma
- Oregon
- Pennsylvania
- Rhode Island
- South Carolina
- South Dakota
- Tennessee
- Texas
- Utah
- Vermont
- Virginia
- Washington
- West Virginia
- Wisconsin
- Wyoming
- Ukraine
- United Kingdom
- Italy
- Poland
- Australia
- Spain
- New Zealand
- France
- Germany
TOP 30 Banh mi sandwiches in California
423 results found
Search for local businesses, places and services near you
The Vox Kitchen
The Vox Kitchen is a vibrant and modern restaurant located in Fountain Valley, California. Known for its innovative fusion cuisine that combines traditional Vietnamese flavors with contemporary culinary techniques, The Vox Kitchen offers a unique dining experience that is sure to delight your taste buds. Situated at 16161 Brookhurst Street, this bustling eatery is a popular destination for food enthusiasts looking to savor delicious dishes in a stylish and welcoming atmosphere. Whether you're craving a flavorful bowl of pho, a crispy banh mi sandwich, or a refreshing boba tea, The Vox Kitchen has something for everyone. Come and enjoy a memorable meal at this top-notch establishment.
Quán Mii Restaurant
Quán Mii Restaurant is a charming eatery located at 16031 Brookhurst Street in Fountain Valley, California. This cozy restaurant offers a delightful dining experience with a menu filled with traditional Vietnamese cuisine. From pho to banh mi sandwiches, each dish is prepared with fresh ingredients and authentic flavors. The warm and inviting atmosphere makes Quán Mii Restaurant the perfect spot for a casual meal with friends or a special family gathering. Come and indulge in the delicious dishes at this hidden gem in Fountain Valley.
Pho 88 Restaurant, Inc.
Pho 88 Restaurant, Inc. is a popular Vietnamese cuisine destination located at 10528 McFadden Avenue in Garden Grove, California. Whether you're craving a bowl of flavorful pho or delicious banh mi sandwiches, this restaurant has it all. With the convenience of pickup and delivery options through Beyond Menu, you can enjoy your favorite dishes from the comfort of your own home. Our commitment is to offer a wide variety of authentic Vietnamese dishes to satisfy your cravings and provide you with the best culinary experience possible. Visit Pho 88 Restaurant, Inc. today and indulge in the flavors of Vietnam.
Luc Dinh Ky 1 Restaurant
Luc Dinh Ky 1 Restaurant is a popular dining destination located at 9812 Bolsa Avenue in Westminster, California. Known for its authentic Vietnamese cuisine, this restaurant offers a wide variety of delicious dishes that will satisfy any craving. From savory pho to flavorful banh mi sandwiches, Luc Dinh Ky 1 Restaurant is a must-visit for those looking to experience the flavors of Vietnam. With a cozy atmosphere and friendly staff, this restaurant provides a memorable dining experience for all guests. Come in and enjoy a taste of Vietnam at Luc Dinh Ky 1 Restaurant.
Quán Hợp Restaurant
Quán Hợp Restaurant is a popular dining destination located at 15640 Brookhurst Street in Westminster, California. This Vietnamese restaurant offers a wide range of authentic dishes that are sure to satisfy your cravings for delicious and flavorful Asian cuisine. From pho to banh mi sandwiches, Quán Hợp Restaurant serves up traditional Vietnamese favorites in a cozy and welcoming atmosphere. Come enjoy a taste of Vietnam right here in the heart of California at Quán Hợp Restaurant.
Ngu Binh Restaurant
Ngu Binh Restaurant is a cozy and inviting café located at 16033 Brookhurst Street in Fountain Valley, California. This charming restaurant offers a wide variety of delicious Vietnamese cuisine, from traditional pho and banh mi sandwiches to flavorful stir-fry dishes and refreshing spring rolls. The friendly staff and warm atmosphere make it the perfect spot for a casual meal or a quick bite to eat. Come visit Ngu Binh Restaurant and experience the flavors of Vietnam right here in the United States.
Hương Vietnamese Restaurant
Hương Vietnamese Restaurant is a cozy and inviting establishment located in Santa Ana, California. Situated at 5423 West 1st Street, this restaurant offers an authentic Vietnamese dining experience in the heart of the United States. From traditional pho and banh mi sandwiches to delicious spring rolls and refreshing Vietnamese iced coffee, Hương Vietnamese Restaurant serves up a wide variety of flavorful dishes that will satisfy any craving. Whether you're looking for a quick bite to eat or a relaxing meal with friends, this restaurant is the perfect spot to enjoy delicious Vietnamese cuisine in a welcoming atmosphere. So come on in and taste the flavors of Vietnam at Hương Vietnamese Restaurant!
Phans55 Vietnamese Bistro & Bar | Pacific City
Phans55 Vietnamese Bistro & Bar | Pacific City is a vibrant and stylish restaurant located in the heart of Huntington Beach, California. Situated at 21058 California 1, this eatery offers a modern twist on traditional Vietnamese cuisine, with a focus on fresh ingredients and bold flavors. The sleek and inviting atmosphere makes it the perfect spot for a casual meal or a night out with friends. Whether you're craving a classic pho bowl, a refreshing banh mi sandwich, or a creative cocktail from the bar, Phans55 has something to satisfy every palate. Come experience the best of Vietnamese cuisine in the lively setting of Pacific City.
MR. PHO California Kitchen and Bar
MR. PHO California Kitchen and Bar is a vibrant and modern restaurant located in Anaheim, California. Situated at 2191 South Harbor Boulevard, this establishment offers a unique blend of traditional Vietnamese cuisine with a modern twist. From delicious pho noodles to flavorful banh mi sandwiches, MR. PHO California Kitchen and Bar is the perfect place to enjoy a taste of Vietnam in Southern California. With a stylish and welcoming atmosphere, this restaurant is the ideal spot for a casual meal with friends or a special night out. Experience the flavors of California and Vietnam come together at MR. PHO California Kitchen and Bar.
My Pho
My Pho is a cozy and inviting restaurant located at 3426 East Chapman Avenue in Orange, California. Specializing in traditional Vietnamese cuisine, our menu features a variety of delicious pho noodle soups, flavorful banh mi sandwiches, and fresh spring rolls. Our dishes are made with high-quality ingredients and authentic flavors, creating a truly satisfying dining experience. Whether you are looking for a quick lunch or a relaxing dinner, My Pho is the perfect destination for delicious and affordable Vietnamese food. Come visit us today and indulge in the flavors of Vietnam right here in Orange, California.
Little Green Cyclo
Located at 2000 Sierra Point Parkway in Brisbane, California, Little Green Cyclo is a unique institution that combines a cafe, food, restaurant, and store all in one. Specializing in fresh and healthy Vietnamese cuisine, this establishment offers a diverse menu of delicious dishes made with locally sourced ingredients. Whether you're looking for a quick bite to eat, a sit-down meal, or some groceries to take home, Little Green Cyclo has something for everyone. Come and experience the vibrant flavors and welcoming atmosphere of this one-of-a-kind institution in the heart of California.
Nguyen's Kitchen
Nguyen's Kitchen is a beloved restaurant located at 445 South Main Street in Orange, California. Specializing in delicious Vietnamese cuisine, this institution offers a wide variety of authentic dishes that are sure to tantalize your taste buds. From savory pho and banh mi sandwiches to fresh spring rolls and flavorful rice dishes, Nguyen's Kitchen has something for every palate. Come and experience the warm and inviting atmosphere while enjoying a meal made with love and care. Whether you're a longtime fan or a first-time visitor, you're guaranteed to leave satisfied and eager to return for more.
Mama Hong's
Mama Hong's is a beloved restaurant located at 1628 East Lincoln Avenue in Orange, California. Specializing in authentic Asian cuisine, Mama Hong's offers a wide variety of dishes that are sure to satisfy any craving. From traditional Vietnamese pho to mouth-watering Chinese stir-fry, Mama Hong's uses only the freshest ingredients to create delicious and flavorful meals. Whether you're looking for a quick lunch or a relaxing dinner, Mama Hong's is the perfect spot to enjoy a delicious meal in a cozy and welcoming atmosphere. Come visit us today and experience the flavors of Mama Hong's!
Oc & Lau Restaurant
Oc & Lau Restaurant is a popular dining destination located at 10130 Garden Grove Boulevard in Garden Grove, California. This restaurant offers a diverse menu of delicious Vietnamese cuisine, specializing in traditional dishes such as pho, banh mi, and spring rolls. The cozy atmosphere and friendly service make it a favorite spot for locals and visitors alike. Whether you're craving a hearty bowl of noodles or a refreshing bowl of vermicelli salad, Oc & Lau Restaurant is sure to satisfy your appetite for authentic Vietnamese flavors. Come and experience the taste of Vietnam right here in California.
Bình Minh Restaurant
Bình Minh Restaurant is a cozy and inviting eatery located at 9908 Westminster Boulevard in Garden Grove, California. Known for its delicious Vietnamese cuisine, the restaurant offers a wide variety of traditional dishes that are sure to please any palate. Guests can enjoy flavorful pho, crispy spring rolls, and savory banh mi sandwiches in a warm and welcoming atmosphere. Whether you're looking for a quick lunch or a leisurely dinner, Bình Minh Restaurant is the perfect spot to satisfy your cravings for authentic Vietnamese flavors. Come visit us and experience the taste of Vietnam right here in the heart of California.
Nam Giao Restaurant
Nam Giao Restaurant is a hidden gem located at 10145 Westminster Avenue in Garden Grove, California. This authentic Vietnamese restaurant offers a wide range of delicious dishes that will tantalize your taste buds. From traditional pho and banh mi sandwiches to flavorful noodle dishes and fresh spring rolls, Nam Giao Restaurant has something for everyone. The cozy atmosphere and friendly staff make it the perfect spot for a casual meal or a special occasion. Come experience the flavors of Vietnam at Nam Giao Restaurant.
Khởi Hưng Restaurant
Khởi Hưng Restaurant is a popular dining destination located at 10548 Westminster Avenue in Garden Grove, California. This charming restaurant offers authentic Vietnamese cuisine in a cozy and inviting atmosphere. Known for their delicious pho, fresh spring rolls, and flavorful banh mi sandwiches, Khởi Hưng Restaurant is a must-visit for those looking to experience the rich flavors of Vietnamese cuisine. With friendly service and affordable prices, this restaurant is perfect for a casual meal with family and friends. Come and enjoy a taste of Vietnam at Khởi Hưng Restaurant!
Pho 888 Pomona
Pho 888 Pomona is a popular Vietnamese restaurant located in Pomona, California. Situated at 2266 South Garey Avenue, this eatery is known for serving authentic and delicious Vietnamese cuisine. From flavorful pho noodle soups to fresh spring rolls and tasty banh mi sandwiches, Pho 888 Pomona offers a wide variety of dishes that will satisfy any craving for Vietnamese food. The cozy atmosphere and friendly staff make it a great spot for a casual meal or a quick bite to eat. Visit Pho 888 Pomona for a taste of Vietnam right in the heart of California.
Phở Bánh Mì & Chè Cali
Phở Bánh Mì & Chè Cali is a popular food institution located at 18122 Brookhurst Street in Fountain Valley, California. Established in 1986, this restaurant has become a go-to spot for fresh French bread, bakery items, Vietnamese noodle soup, and delicious desserts in Orange and Los Angeles Counties. With multiple locations in Orange County, including Westminster, Fullerton, Santa Ana, and Garden Grove, Phở Bánh Mì & Chè Cali offers a wide variety of authentic Vietnamese dishes to satisfy your cravings. Whether you're in the mood for a hearty bowl of pho or a crispy banh mi sandwich, this restaurant has something for everyone. Visit Phở Bánh Mì & Chè Cali for a taste of traditional Vietnamese cuisine in a welcoming and friendly atmosphere.
PhoTasia Restaurant
PhoTasia Restaurant is a culinary gem located at 5329 University Drive in Irvine, California. This cozy eatery specializes in serving authentic and flavorful Vietnamese cuisine, with a focus on delicious and satisfying bowls of pho. Guests can expect a warm and inviting atmosphere, friendly service, and a menu filled with a variety of traditional dishes made with fresh ingredients. Whether you're craving a steaming bowl of soup, a crispy banh mi sandwich, or a refreshing summer roll, PhoTasia Restaurant has something to satisfy every appetite. Come and experience the taste of Vietnam right here in the heart of Irvine.
Little Vietnam Cafe
Little Vietnam Cafe is a charming eatery located in the heart of San Francisco's bustling 6th Avenue. Specializing in traditional Vietnamese cuisine, this cozy restaurant offers a menu filled with authentic flavors and dishes that will transport you straight to the streets of Hanoi. From steaming bowls of pho to flavorful banh mi sandwiches, every dish is prepared with care and attention to detail. The warm and inviting atmosphere makes it the perfect spot for a casual lunch or a relaxed dinner with friends and family. Come experience the taste of Vietnam at Little Vietnam Cafe.
Saigon Noodle House
Saigon Noodle House is a popular Vietnamese restaurant located at 1486 North Kraemer Boulevard in Placentia, California. Known for its authentic and flavorful noodle dishes, this establishment offers a wide variety of traditional Vietnamese cuisine that will delight your taste buds. Whether you're craving a steaming bowl of pho, a refreshing vermicelli bowl, or a tasty banh mi sandwich, Saigon Noodle House has something for everyone. Come experience the delicious flavors of Vietnam right here in the heart of California.
Pho Vina
Pho Vina is a popular Vietnamese restaurant located at 5773 East La Palma Avenue in Anaheim, California. Known for its authentic Vietnamese cuisine, Pho Vina offers a wide range of delicious dishes, including their specialty pho noodle soup, spring rolls, and banh mi sandwiches. With a cozy and inviting atmosphere, this restaurant is the perfect place to enjoy a flavorful and satisfying meal. Whether you're craving a bowl of steaming hot pho or looking to try some traditional Vietnamese dishes, Pho Vina is sure to impress with its tasty and affordable menu options. Visit Pho Vina today to experience the flavors of Vietnam right here in California.
399 Vietnamese Kitchen
399 Vietnamese Kitchen, located at 13254 Jamboree Road in Tustin, California, is a family-owned restaurant that brings the authentic flavors of Vietnamese cuisine to the heart of Orange County. Founded by head chef Hong Nguyen, who learned her traditional family recipes from her mother and grandmother, 399 offers a menu filled with beloved dishes such as Phở, spring rolls, and Banh Mi. The warm and inviting atmosphere of the restaurant, inspired by Hong's childhood home in Saigon, creates a dining experience that is both comforting and memorable. With a focus on quality ingredients and exceptional service, 399 Vietnamese Kitchen is a must-visit destination for anyone looking to savor the delicious flavors of Vietnam in Southern California.
Pho Mai
Pho Mai is a popular Vietnamese restaurant located at 4505 Chino Hills Parkway in Chino Hills, California. Known for its delicious and authentic Vietnamese cuisine, Pho Mai offers a wide variety of dishes including pho, banh mi sandwiches, spring rolls, and more. The cozy and inviting atmosphere makes it the perfect spot for a casual meal with friends or family. Whether you're craving a hearty bowl of noodle soup or a flavorful rice dish, Pho Mai has something for everyone to enjoy. Come visit us and experience the flavors of Vietnam right here in Chino Hills!
Pho Koi Restaurant
Pho Koi Restaurant is a popular dining destination located on 486 North Main Street in Corona, California. Known for its delicious Vietnamese cuisine, this restaurant offers a variety of traditional dishes such as pho, spring rolls, and banh mi sandwiches. The cozy and welcoming atmosphere makes it a great spot for a casual meal or a gathering with friends and family. With friendly service and affordable prices, Pho Koi Restaurant is a must-visit for anyone looking to experience authentic Vietnamese flavors in the heart of California.
Simply Pho
Simply Pho is a cozy Vietnamese restaurant located at 23775 El Toro Road in Lake Forest, California. Specializing in the traditional and delicious Vietnamese noodle soup, pho, Simply Pho offers a variety of options to suit every palate. From beef to chicken to vegetarian, their pho is made with fresh ingredients and authentic flavors. In addition to pho, the restaurant also serves other Vietnamese dishes such as spring rolls, banh mi sandwiches, and rice plates. With friendly service and a welcoming atmosphere, Simply Pho is the perfect spot to enjoy a comforting and satisfying meal.
NHAU Vietnamese Street Food
NHAU Vietnamese Street Food is a vibrant and authentic Vietnamese restaurant located in Eastvale, California. Our menu features a variety of traditional Vietnamese dishes, including banh mi sandwiches, pho noodle soup, and fresh spring rolls. Our chefs use only the freshest ingredients to create delicious and flavorful meals that will transport you straight to the bustling streets of Vietnam. Whether you're looking for a quick and casual meal or a sit-down dining experience, NHAU Vietnamese Street Food has something for everyone. Come visit us at 4926 Hamner Avenue and experience the taste of Vietnam right here in California.
Pho Ngon Restaurant
Pho Ngon Restaurant is a cozy and inviting dining establishment located at 18285 Collier Avenue in Lake Elsinore, California. Specializing in traditional Vietnamese cuisine, this restaurant offers a wide variety of pho dishes, noodle soups, and flavorful stir-fries. The welcoming atmosphere and attentive service make it a popular choice for both locals and visitors looking to enjoy authentic Vietnamese flavors. Whether you're craving a hearty bowl of pho or a delicious banh mi sandwich, Pho Ngon Restaurant is sure to satisfy your appetite for delicious Asian cuisine.
Pho' Neighbors
Pho' Neighbors is a cozy and welcoming restaurant located at 32245 Mission Trail in Lake Elsinore, California. Specializing in traditional Vietnamese cuisine, this establishment offers a wide variety of pho dishes, as well as other delicious options such as spring rolls, banh mi sandwiches, and rice plates. The friendly staff and inviting atmosphere make Pho' Neighbors the perfect place to enjoy a satisfying meal with friends and family. Come visit us and experience the flavors of Vietnam right here in the heart of California.
- Restaurants
- Sushi delivery
- French cuisine restaurant
- Oriental restaurant
- French restaurant
- Fine dining restaurant
- Chinese restaurant
- Bistro
- Cafe
- Pub
- Thai restaurant
- Steak house
- Sushi
- Banh mi sandwiches in Alameda
- Banh mi sandwiches in Albany
- Banh mi sandwiches in Alhambra
- Banh mi sandwiches in American Canyon
- Banh mi sandwiches in Anaheim
- Banh mi sandwiches in Arcata
- Banh mi sandwiches in Artesia
- Banh mi sandwiches in Bakersfield
- Banh mi sandwiches in Bellflower
- Banh mi sandwiches in Benicia
- Banh mi sandwiches in Berkeley
- Banh mi sandwiches in Bishop
- Banh mi sandwiches in Brea
- Banh mi sandwiches in Brentwood
- Banh mi sandwiches in Camarillo
- Banh mi sandwiches in Campbell
- Banh mi sandwiches in Carson
- Banh mi sandwiches in Chino
- Banh mi sandwiches in Chino Hills
- Banh mi sandwiches in Chula Vista
- Banh mi sandwiches in Citrus Heights
- Banh mi sandwiches in Colton
- Banh mi sandwiches in Commerce
- Banh mi sandwiches in Concord
- Banh mi sandwiches in Corona
- Banh mi sandwiches in Costa Mesa
- Banh mi sandwiches in Cotati
- Banh mi sandwiches in Culver City
- Banh mi sandwiches in Cupertino
- Banh mi sandwiches in Cypress
- Banh mi sandwiches in Daly City
- Banh mi sandwiches in Dublin
- Banh mi sandwiches in Eastvale
- Banh mi sandwiches in El Cerrito
- Banh mi sandwiches in El Monte
- Banh mi sandwiches in El Sobrante
- Banh mi sandwiches in Elk Grove
- Banh mi sandwiches in Escondido
- Banh mi sandwiches in Eureka
- Banh mi sandwiches in Fairfax
- Banh mi sandwiches in Folsom
- Banh mi sandwiches in Fountain Valley
- Banh mi sandwiches in Fremont
- Banh mi sandwiches in Fullerton
- Banh mi sandwiches in Garden Grove
- Banh mi sandwiches in Gilroy
- Banh mi sandwiches in Goleta
- Banh mi sandwiches in Half Moon Bay
- Banh mi sandwiches in Hawaiian Gardens
- Banh mi sandwiches in Hawthorne
- Banh mi sandwiches in Hayward
- Banh mi sandwiches in Hemet
- Banh mi sandwiches in Hercules
- Banh mi sandwiches in Huntington Beach
- Banh mi sandwiches in Huntington Park
- Banh mi sandwiches in Irvine
- Banh mi sandwiches in La Mirada
- Banh mi sandwiches in La Palma
- Banh mi sandwiches in Lake Elsinore
- Banh mi sandwiches in Lake Forest
- Banh mi sandwiches in Lawndale
- Banh mi sandwiches in Livermore
- Banh mi sandwiches in Long Beach
- Banh mi sandwiches in Los Altos
- Banh mi sandwiches in Los Angeles
- Banh mi sandwiches in Los Banos
- Banh mi sandwiches in Martinez
- Banh mi sandwiches in Mill Valley
- Banh mi sandwiches in Milpitas
- Banh mi sandwiches in Modesto
- Banh mi sandwiches in Monterey
- Banh mi sandwiches in Monterey Park
- Banh mi sandwiches in Moreno Valley
- Banh mi sandwiches in Morgan Hill
- Banh mi sandwiches in Mountain View
- Banh mi sandwiches in Murrieta
- Banh mi sandwiches in National City
- Banh mi sandwiches in Newark
- Banh mi sandwiches in Norwalk
- Banh mi sandwiches in Oakland
- Banh mi sandwiches in Oakley
- Banh mi sandwiches in Oceanside
- Banh mi sandwiches in Orange
- Banh mi sandwiches in Oxnard
- Banh mi sandwiches in Palo Alto
- Banh mi sandwiches in Paramount
- Banh mi sandwiches in Petaluma
- Banh mi sandwiches in Pico Rivera
- Banh mi sandwiches in Pinole
- Banh mi sandwiches in Pittsburg
- Banh mi sandwiches in Placentia
- Banh mi sandwiches in Pleasant Hill
- Banh mi sandwiches in Pomona
- Banh mi sandwiches in Rancho Cucamonga
- Banh mi sandwiches in Redlands
- Banh mi sandwiches in Redondo Beach
- Banh mi sandwiches in Riverside
- Banh mi sandwiches in Rocklin
- Banh mi sandwiches in Rohnert Park
- Banh mi sandwiches in Rosemead
- Banh mi sandwiches in Sacramento
- Banh mi sandwiches in San Bernardino
- Banh mi sandwiches in San Diego
- Banh mi sandwiches in San Francisco
- Banh mi sandwiches in San Jose
- Banh mi sandwiches in San Leandro
- Banh mi sandwiches in San Marcos
- Banh mi sandwiches in San Mateo
- Banh mi sandwiches in San Rafael
- Banh mi sandwiches in Santa Ana
- Banh mi sandwiches in Santa Barbara
- Banh mi sandwiches in Santa Clara
- Banh mi sandwiches in Santa Maria
- Banh mi sandwiches in Santa Monica
- Banh mi sandwiches in Santa Rosa
- Banh mi sandwiches in Seaside
- Banh mi sandwiches in Sebastopol
- Banh mi sandwiches in South El Monte
- Banh mi sandwiches in South Gate
- Banh mi sandwiches in South San Francisco
- Banh mi sandwiches in Stanton
- Banh mi sandwiches in Sunnyvale
- Banh mi sandwiches in Temecula
- Banh mi sandwiches in Thousand Oaks
- Banh mi sandwiches in Torrance
- Banh mi sandwiches in Tracy
- Banh mi sandwiches in Turlock
- Banh mi sandwiches in Tustin
- Banh mi sandwiches in Union City
- Banh mi sandwiches in Vacaville
- Banh mi sandwiches in Vallejo
- Banh mi sandwiches in Ventura
- Banh mi sandwiches in Vista
- Banh mi sandwiches in Walnut Creek
- Banh mi sandwiches in West Covina
- Banh mi sandwiches in West Hollywood
- Banh mi sandwiches in Westminster
- Banh mi sandwiches in Whittier
List of local businesses, places and services in California
⭐ business help 🔍 services ☎ phones 🕒 opening times ✍️reviews 🌍 addresses, locations 📷 photos