Callum Keith Rennie (born September 14, 1960 in Sunderland, Tyne and Wear, England) is a Scottish-Canadian television and film actor.
When Callum was four years old, his Scottish parents relocated the family from England to Canada. Rennie was raised in Alberta, as the second of three boys. He began work in university radio, and discovered acting while in Edmonton at the age of 25.
For roughly a decade through his late teens and twenties, Rennie struggled with alcoholism. However, in the summer of 1993, a dramatic event led him to change. While in a rough Vancouver bar, Rennie and a construction worker got into an altercation. He 'flipped the bird' to the construction worker, who punched his fist through a plate glass window, and drove a shard of glass into Rennie's left eye and retina. The injury helped him to gain some perspective, and motivated him to conquer his alcoholic tendencies.
He has had roles in a variety of Canadian television series, including Twitch City, Da Vinci's Inquest and Due South. He has also been in a number of movies, including Double Happiness (as the love interest of Sandra Oh), Curtis's Charm, Hard Core Logo, eXistenZ, Memento, The Five People You Meet in Heaven and Flower & Garnet. He has a recurring role in the reimagined Battlestar Galactica as the Cylon Agent known as Leoben Conoy.
One of Rennie's most widely recognized roles is that of Detective Stanley Raymond Kowalski on the Canadian television series Due South. The show has been aired in over 150 countries, helping to broaden Rennie's fanbase.
Rennie has made guest appearances on several television shows. These include Forever Knight, Mutant X and Highlander, in which he played both a mortal in the Season 2 episode "An Eye For an Eye" and an immortal named Tyler King in the Season 5 episode "The Innocent". During Season 1 of La Femme Nikita, Rennie guest-starred in the two-part episodes "Gray" and "Choice" as the only love interest Nikita had outside Section One during the entire run of the series. Rennie also appeared in The X-Files, initially offered the role of Alex Krycek. He turned down the role because he did not want to commit to a television series at that time, but he later guest-starred on the show. More recently, Rennie has made an appearance on Smallville as a FOTW (Freak of the Week) in the Season 5 episode "Fragile".
Currently Rennie resides in Vancouver, also dividing his time between Toronto and Los Angeles.