William Johnson Bacon (February 18, 1803 – July 3, 1889) was an American politician and a U.S. Representative from New York.

Bacon studied for a year in the law office of Joseph and Charles P. Kirkland.

[1][2] Bacon was appointed city attorney of Utica in 1837, and was a member of the New York State Assembly in 1850.

[citation needed] Elected as a Republican to the 45th United States Congress, Bacon served as U.S. Representative for the twenty-third district of New York from March 4, 1877 to March 3, 1879.

[2] Bacon died in Utica, Oneida County, New York, on July 3, 1889.