William Donahue (August 12, 1834 - July 15, 1892) was a merchant and political figure in Quebec. He represented Missisquoi in the House of Commons of Canada from 1874 to 1878 as a Liberal member.
He was born in Frampton, Lower Canada, the son of Michael Donahue and Mary Murphy,[1] Irish immigrants. Donahue was a merchant in West Farnham and Montreal. In 1882, he married Mary Ann Miller.[1] Donahue served as a member of the municipal council for Missisquoi County.[2] He was mayor of the village of Farnham from 1872 to 1874.[3] He died in Farnham at the age of 57.[1]