John G. Williams (born December 31, 1946) was a Conservative MP representing Edmonton—St. Albert in the Canadian parliament from 1993 to 2008. He was born in Aberdeenshire, Scotland. Originally associated with the Reform Party, he was a member of the Conservatives since its formation in 2003. He was a long-time chair of the Public Accounts Committee in the House of Commons of Canada. In August 2006, he announced that he would not be seeking re-election in the next federal election.