John Herron is a politician who was first elected to the House of Commons of Canada in 1997 and was re-elected in 2000. Herron was a member of the Progressive Conservative Party and did not support its merger with the Canadian Alliance into the Conservative Party of Canada in 2003. The success of this merger prompted Herron to announce that he would not run federally again.

Herron became infamous during the 2003 Progressive Conservative leadership convention when Herron abandoned the campaign of Scott Brison before the second ballot. Brison lost on the second ballot to Jim Prentice by 3 votes, many blamed this loss on Herron.