Donald Thomas
Donald Thomas or Don Thomas may refer to:
- Donald A. Thomas, American engineer and former NASA astronaut
- D. M. Thomas, Cornish novelist, poet, and translator
- Donald Serrell Thomas, British writer of Victorian-era historical, crime and detective fiction
- Donald Thomas (high jumper), Bahamian high jumper
- Donald Thomas (American football), American football guard
- Donald Thomas (racing driver), stock car racing driver
- Donnie Thomas (American football), American football linebacker
- Donald W. Thomas, university administrator and ecologist
- E. Donnall Thomas, 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