Jon Mikl Thor (born 1953), better known as simply Thor, is a Canadian bodybuilding champion, actor, songwriter, screenwriter, historian, vocalist and musician.

As a bodybuilder, he was the first Canadian to win both the Mr. Canada and Mr. USA titles. During his bodybuilding career, he has achieved over 40 titles around the world. As a musician, he is the front man for the heavy metal band Thor, billing himself as "The Legendary Rock Warrior". He has also had a career in acting, appearing in such films as Recruits (1986), Zombie Nightmare (1987), Rock 'n' Roll Nightmare (1987) and FUBAR (2002).