A. J. Cook
Andrea Joy Cook (born July 22, 1978) is a Canadian actress. She is best known for her role as Supervisory Special Agent Jennifer "JJ" Jareau on the CBS crime drama Criminal Minds (2005–2020, 2022-). Cook has also appeared in The Virgin Suicides (1999), Higher Ground (2000), Ripper (2001), Out Cold (2001), Final Destination 2 (2003), and Tru Calling (2003–2004).
Source: Wikipedia