Thomas Harrington
Thomas Harrington may refer to:
- Thomas Harrington (died 1460), English knight
- Thomas Harrington (diver), British Olympic diver
- Thomas Harrington (FBI), Associate Deputy Director of the United States Federal Bureau of Investigation
- Thomas Harrington (footballer), English footballer
- Thomas Harrington & Sons, a coachbuilder
- Tom Harrington (footballer), Australian rules footballer
- Tom Harrington (journalist), Canadian radio and television journalist
- Thomas Harrington (baseball), American baseball player