Thomas "Tommy" Sexton (July 3, 1957-December 13, 1993) was a Canadian comedian. Born in St. John's, Newfoundland, he was the youngest member of the CODCO comedy troupe.

Educated in St. John's, he was an honours student before quitting after Grade 10 to pursue an acting career in Toronto. After briefly working on a children's touring theatre show, he landed his first television role in the drama series Police Surgeon. Sexton and colleague Diane Olsen subsequently wrote Cod on a Stick, a comedic play which launched CODCO.

In 1975, Sexton took a brief sabbatical from CODCO to study at the Toronto Dance Theatre. He subsequently returned, working on other shows with CODCO and subsequently touring with colleague Greg Malone in two co-written works, The Wonderful Grand Band and Two Foolish to Talk About. In 1985 and 1986, Sexton and Malone wrote and performed in a series of television specials for the CBC, called The S and M Comic Book, which in turn led to CODCO landing its own series in 1987.

After CODCO's run concluded in 1992, Sexton and Malone wrote and starred in a CBC television special, The National Doubt, satirizing the constitutional debates of the early 1990s. Sexton subsequently wrote a semi-autobiographical film, Adult Children of Alcoholics: The Musical, which was in production in November of 1993 when Sexton fell ill due to complications from AIDS. He subsequently died on December 13 of that year.

Malone subsequently campaigned for HIV and AIDS education in Sexton's memory.