William Francis Cotton

William Francis Cotton (1847 – 8 June 1917) was an Irish Nationalist politician. He sat for South Dublin in the United Kingdom House of Commons.

He was chairman of the Alliance Gas Company and A. Findlater and Company, as well as a director of the Dublin United Tramways Company and others. He was an alderman of Dublin Corporation and Sheriff of Dublin in 1901.

He won the seat at the December 1910 general election, narrowly defeating the Unionist incumbent, and held it until his death.