Alphonse-Edgar Guillemette (25 June 1877 – 23 August 1950) was a politician in Quebec, Canada.
He took up residence at Shawinigan in 1899, working first as a baker, and later as a trader in grains and feed.
In 1920 he ran in the by-election in the Saint-Maurice district on the Liberal ticket, but was not elected.
However, he was defeated by another Liberal, Joseph-Auguste Frigon, in the 1927 general election.
He was a member of the Shawinigan Chamber of Commerce, the Knights of Columbus, and the Northern Club.