William Cullen
Member of the U.S. House of Representatives from Illinois's 8th district
In office March 4, 1883 – March 3, 1885
Preceded by	Lewis E. Payson
Succeeded by	Ralph Plumb
Member of the U.S. House of Representatives from Illinois's 7th district
In office March 4, 1881 – March 3, 1883
Preceded by	Philip C. Hayes
Succeeded by	Thomas J. Henderson
Personal details
Born	(1826-03-04)March 4, 1826 County Donegal, Ireland
Died	January 17, 1914(1914-01-17) (aged 87) Ottawa, Illinois
Political party	Republican

William Cullen (March 4, 1826 – January 17, 1914) was a U.S. Representative from Illinois.

Born in County Donegal, Ireland, Cullen immigrated to the United States in 1832 with his parents, who settled in Pittsburgh, Pennsylvania, where he attended the public schools and the Allegheny Academy. He later relocated to Adams Township, LaSalle County, Illinois, in 1846 and engaged in agricultural pursuits. Sheriff of LaSalle County, Illinois (1864–65). He moved to Ottawa, Illinois, in 1865, and worked as the political editor of the Ottawa Republican 1871-1887. Cullen was elected as a Republican to the Forty-seventh and Forty-eighth Congresses (March 4, 1881 – March 3, 1885).

Cullen was an unsuccessful candidate for renomination in 1884. He lived in retirement in Ottawa, Illinois, until his death there January 17, 1914. He was interred in Ottawa Avenue Cemetery.^{[citation needed]}