- Source: Thomas Dillon (disambiguation)
Thomas Dillon (1950–2011) was an American serial killer.
Thomas or Tom Dillon may also refer to:
Thomas Dillon, 4th Viscount Dillon (1615–1673), Irish peer
Thomas Dillon (chemist) (1886–1971), Irish chemist and nationalist
Thomas Dillon (judge) (c. 1535–1606), Irish judge and landowner
Thomas Dillon (politician), Australian politician
Tom Dillon (Australian footballer) (1920–2007), Australian rules footballer
Tom Dillon (Gaelic footballer) (1926–2019), Irish Gaelic footballer
Tom Dillon (rugby union) (born 1983), English rugby union footballer