- Callum's left eye was injured in a bar room fight when a shard of glass drove into his left eye and retina.
- Was personally chosen by Paul Gross to play his partner in 'Due South (1994-1999)' as the two had been friends for years before.
- Made his first screen appearance at the age of 33.
- Turned down the role of Alex Krycek in The X-Files (1993).
- Did not start acting until he was age 25.
- Went to high school with Bruce McCulloch, who mentioned him in at least one The Kids in the Hall (1988) sketch. In the sketch, Bruce is giving advice on how to break into showbiz, and it includes "drinking a lot with guys like Callum Rennie and Terry Rockio and pissing out the back of a fast-moving truck.".
- His parents are Scottish.
- Likes painting and admires the work of Jean-Michel Basquit, Robert Motherwell and Jackson Pollock.
- Was born in Sunderland, England but has lived in Canada since he was four years old.
- Vocalist Ben Kowalewicz of the popular Canadian punk-rock band 'Billy Talent' has stated that Rennie is his favorite Canadian actor. Rennie played the character Billy Tallent in the Bruce McDonald film Hard Core Logo (1996), which is what inspired the band's name.
- His first role was in a theatrical production of David Mamet's American Buffalo.
- Dropped out of college.
- Was an avid mountain climber in his youth and still engages in various sports with Golf being his favorite.
- Is the middle child of 3 boys.
- Enjoys fishing.
Contribute to this page
Suggest an edit or add missing content