Tremain is a Cornish language surname and, rarely, forename.

Notable people with the surname include:

• Chris Tremain (born 1966), New Zealand politician
• Garrick Tremain (born 1941), New Zealand cartoonist and painter
• George Tremain (1874–1948), Justice of the Indiana Supreme Court
• Kel Tremain (1938–1992), New Zealand international rugby player
• Lyman Tremain (1819–1878), American politician
• Rose Tremain (born 1943), British historical novelist

Notable people with the forename include:

• Tremain Mack (born 1974), American football player

• Johnny Tremain, 1943 children's novel by Esther Forbes
• Johnny Tremain (film), based on the novel
• Tremaine (disambiguation)
• Tremayne (disambiguation)

This page lists people with the surname Tremain.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.