Collie or Colly is a surname, given name, and nickname. It may refer to:
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People with the surname
Alexander Collie (1793–1835), Scottish surgeon and naturalist
Anthony Colly, English politician
Austin Collie (born 1985), American retired National Football League player
Bruce Collie (born 1962), American retired National Football League player
J. Norman Collie (1859–1942), British explorer and scientist
John Collie (musician), New Zealand retired drummer
Mark Collie (born 1956), American country singer/songwriter and actor
Max Collie (1931–2018), Australian jazz trombonist
John Collie (doctor) (1860–1935), Scottish medical doctor and public servant
Stephanie Collie (1963–2024), English costume designer
People with the given name
Collie Knox (1899–1977), British author and journalist
David Collie Martin (1890–1917), Scottish footballer
Collie O'Shea (born 1991), Irish rugby union player
People with the nickname
Paul Collingwood (born 1976), English cricketer
Colin Moran (Gaelic footballer) (born 1980), Gaelic footballer
Collie Smith (1933–1959), Jamaican cricketer