Others
- Thomas E. Watson (USMC) (1892–1966), U.S. Marine Corps general
- Thomas Watson (surveyor), early Western Australian surveyor
- Yannima Tommy Watson (born 1953), Australian artist
- Tom Watson (actor) (1932–2001), Scottish-born stage, television and film actor
- Thomas Lennox Watson (1850–1920), Scottish architect and interior designer
- Thomas Colclough Watson (1867–1917), British recipient of the Victoria Cross
- Thomas Watson (physician) (1792–1882), president of the Royal College of Physicians, 1862–1866
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