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) (1908–1988), Australian rules footballer
 * Tom Harrington (journalist), Canadian radio and television journalist
 * Thomas Harrington (baseball) (born 2001), American baseball player