Brendan Jacob Joel Fehr is a Canadian film and television actor, perhaps best known for portraying Michael Guerin in the WB television series Roswell, and for portraying lab tech Dan Cooper in CSI: Miami. In 2008, Fehr won a Gemini Award for "Hottest Canadian Male TV Star". Fehr also played Jared Booth in the Fox television series Bones. He has had numerous film roles.

Michael Guerin is a fictional character created by Melinda Metz for the young adults book series Roswell High and adapted by Jason Katims for the American science fiction television series Roswell (1998–2002). He was portrayed by actor Brendan Fehr in the television series. In the CW reboot, Roswell, New Mexico, he is played by Michael Vlamis.