Thomas Dalton may refer to:
Thomas de Kirkcudbright (before 1294–1324×1326), also known as Thomas de Dalton, medieval prelate from the Kingdom of Scotland Thomas Dalton (abolitionist) (1794–1883), African American abolitionist Thomas Dalton (Australian politician) (1829–1901), Irish-born Australian politician Thomas Dalton Johnston, Canadian politician, active from 1923 to 1926 Tom Dalton (1904–1981), Australian politician and member of the New South Wales Legislative Assembly Thomas d'Alton (1895–1968), Australian politician Thomas Dalton (merchant) (1516/17–1591), English merchant, landowner, and Member of Parliament Thomas Dalton, MP for Leicester, 1455–56 Thomas Dalton (judge) (before 1702–1730), English judge and Chief Baron of the Irish Exchequer