Thomas Warner may refer to:
Sir Thomas Warner (explorer) (1580–1649), English explorer, and settler of St Kitts Sir Courtenay Warner, 1st Baronet (Thomas Courtenay Theydon Warner, 1857–1934), British politician Tom Warner (1948–2019), American politician Tom Warner (activist) (born 1952), Canadian gay rights activist Thomas Warner (poet) (born 1979), British poet Thomas Warner (bobsleigh), British bobsledder Thomas Warner (cricketer), South African cricketer