Colin Simpson may refer to:

• Colin Hall Simpson (1894–1964), Australian general
• Colin M. Simpson (born 1959), Wyoming politician
• Colin Simpson (EastEnders), a minor character in BBC's EastEnders
• Colin Simpson (English journalist) (1931–2017), war correspondent and investigative journalist for The Sunday Times
• Colin Simpson (Canadian author), software developer and author of textbooks
• Colin Simpson (Australian journalist) (1908–1983), Australian journalist, author and traveller