William T. Harrington (b. September 29, 1925 in Lynn, Massachusetts - d. February 14, 1998 in Boston, Massachusetts) was an American sportscaster, children's television host, and news reporter for WHDH and TV and WCVB-TV in Boston.
In 1960, Harrington was hired by WHDH-TV to play Commander Jet on Commander Jet's Comedy. He also played Nozo the Clown, the brother of Bozo the Clown. Nozo was used to fill in for Bozo when Frank Avruch was unable to appear on the show.
He was married to fellow Boston television personality Jean D'Allaire, who played "Miss Jean" on the Boston version of Romper Room.