Cotterill is a surname, and may refer to:
- Colin Cotterill (born 1952), an Anglo-Australian teacher, writer and cartoonist
- David Cotterill (born 1987), a Welsh footballer
- George Edward Cotterill (1839 – 1913), an English cricketer who played for Sussex
- George Huth Cotterill (1868 – 1950), an England international footballer, son of George Edward Cotterill
- George F. Cotterill, a Seattle, Washington engineer (1890s) and politician (1910s)
- James Cotterill (born 1982), a retired English footballer
- Joseph Cotterill (1851 – 1933), an English cricketer who played for Sussex, brother of George Edward Cotterill
- Mark Cotterill (born 1960), the founder and former chairman of the England First Party
- Murray Cotterill (died 1995), a Canadian trade union activist
- Rodney Cotterill (1933 – 2007), an Anglo-Danish physicist and neuroscientist
- Steve Cotterill (born 1964), an English footballer and manager
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