Cottrill is a surname of British origin. Notable people with that name include:
- Alan Cottrill, American sculptor
- Deborah Cottrill (born 1963), British competitive figure skater
- Claire Cottrill (born 1998), American singer-songwriter, professionally known as Clairo
- Geoff Cottrill (born 1963), American marketer
- Jedd Philo Clark Cottrill (18321889), American politician in Wisconsin
- Joan Gibson Cottrill, Australian tennis player
- Joe Cottrill (18881972), British athlete who competed in the 1912 Summer Olympics
- John Cottrill (born 1945), Australian tennis player
- Neil Cottrill (born 1971), English badminton player
- Walter Stanley Cottrill (19142005), South African, 15th Chief of the Staff of The Salvation Army
See also
* Cottrell (surname)
- Cottrill Opera House, known since 1915 as Sutton's Opera House or Sutton Theater, a historic vaudeville and movie theater building in Thomas, Tucker County, West Virginia
- Matthew Cottrill House, a historic house in Damariscotta, Maine