Thomas Joseph Hannon (December 9, 1900 – June 27, 1983) was an American politician who served as a member of the Massachusetts House of Representatives from 1935 to 1941 and from 1955 to 1957 and the Boston City Council from 1942 to 1952.

He graduated from The English High School and studied at the Oblate Seminary in Tewksbury, Massachusetts.

[3] In 1940, Hannon ran for the 4th Suffolk District seat in the Massachusetts Senate, but lost to fellow representative Leo J. Sullivan by 83 votes.

During his second term as president Hannon implemented new rules to speed up council business and increase decorum.

[5][6] In 1951, the Boston City Council switched from a body consisting of 22 ward members to a nine-member board elected at-large.