Donald Thomas

Donald Thomas or Don Thomas may refer to:


 * Donald A. Thomas (born 1955), American engineer and former NASA astronaut
 * D. M. Thomas (Donald Michael Thomas, 1935–2023), Cornish novelist, poet, and translator
 * Donald Serrell Thomas (1934–2022), British writer of (primarily) Victorian-era historical, crime and detective fiction
 * Donald Thomas (high jumper) (born 1984), Bahamian high jumper
 * Donald Thomas (American football) (born 1985), American football guard
 * Donald Thomas (racing driver) (1932–1977), stock car racing driver
 * Donnie Thomas (American football) (1953–2017), American football linebacker
 * Donald W. Thomas (1953–2009), university administrator and ecologist
 * E. Donnall Thomas (1920–2012), American physician, developer of bone marrow transplant
 * Donnie Thomas (US Army), former commander of Guantanamo's Joint Detention Group
 * Don Thomas, alias of comic character of Blue Streak