Rosier (surname)
Rosier is a surname. Notable people with the surname include:
- Cathy Rosier (1945–2004), Guadeloupe-born model and actress
- Frederick Rosier (1915–1998), Royal Air Force commander
- Jean-Louis Rosier (20th century), French racecar driver
- Joseph Rosier (1870–1951), United States Senator from West Virginia
- Louis Rosier (1905–1956), racing driver