Thomas Webb may refer to:
- Thomas Webb (Gloucester MP) (c. 1663–1734), English MP for Gloucester
- Thomas Richmond Webb (1663–1731), English politician, MP for Calne, Cricklade and Devizes
- Thomas Webb (Methodist) (1724–1796), British-born Methodist pioneer and missionary in America
- Thomas Webb (priest) (died 1797), Dean of Kilmore
- Thomas Smith Webb (1771–1819), American Masonic author
- Thomas Webb (engraver) (1797–1822), British metal engraver
- Thomas Webb (glassmaker) (1804–1869), founder of Thomas Webb & Sons
- Thomas Webb & Sons, English glass company
- Thomas William Webb (1807–1885), British astronomer
- Thomas Webb (co-operator) (1829–1896), British co-operative movement activist
- Thomas Webb (judge) (1845–1916), Australian barrister and Supreme Court of Victoria judge
- Sir Clifton Webb (politician) (Thomas Clifton Webb, 1889–1962), New Zealand politician and diplomat
- Thomas Llewelyn Webb (born 1978), British social psychologist
- Tom Webb (born 1989), English footballer
- Thomas Webb (artist) (born 1991), British multidisciplinary artist