William Dwyer (1887 – 10 May 1951) was an Irish politician. A company director by profession, he was an unsuccessful Fine Gael candidate at the 1943 general election for the Cork Borough constituency. He was elected to Dáil Éireann at the 1944 general election as an independent Teachta Dála (TD) for Cork Borough.
He resigned his seat on 29 March 1946 and the subsequent by-election on 14 June 1946 was won by Patrick McGrath of Fianna Fáil. He stood unsuccessfully as an independent candidate at the 1948 general election for the Cork East constituency.