Andrea Joy Cook is a Canadian actress born in Oshawa, Ontario on Jul 22, 1978. When she was four, she took jazz, tap and ballet dance lessons.
In 1997, Cook first appeared in a McDonald's commercial. She worked in two TV movies- In His Father's Shoes and Elvis Meets Nixon. She also appeared in television movie 'The Spiral Staircase' in 2000. In 2003, Cook guest starred in Dead Like Me.
Since September 2005 she has starred as Jennifer "J.J." Jareau in the CBS drama Criminal Minds. She appeared in the January/ February 2014 issue of Maxim magazine and was ranked at 88 on the Maxim Hot 100 2014 list.
On August 3, 2001, AJ Cook married her long-time boyfriend, Nathan Andersen. They have two sons: Mekhai (born in 2008) and Phoenix Sky (born in Jul 2015).