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

This disambiguation page lists articles about people with the same name.
If an internal link led you here, you may wish to change the link to point directly to the intended article.