William Petersen

William Petersen
Petersen on the set of CSI in March 2004.
Born	William Louis Petersen (1953-02-21) February 21, 1953 (age 71) Evanston, Illinois, U.S.
Other names	William L. Petersen
Education	Bishop Kelly High School
Alma mater	Idaho State University
Occupation	Actor
Years active	1976–present
Known for	CSI: Crime Scene Investigation
Spouses	Joanne Brady ​ ​ (m. 1974; div. 1981)​ Gina Cirone ​ (m. 2003)​
Children	3

William Louis Petersen (born February 21, 1953) is an American actor. He is best known for his role as Gil Grissom in the CBS drama thriller series CSI: Crime Scene Investigation (2000–2015), for which he won a Screen Actors Guild Award and was nominated for a Golden Globe Award; he was further nominated for three Primetime Emmy Awards as a producer of the show.^[1] He reprised his role as Gil Grissom in the sequel CSI: Vegas, which premiered on October 6, 2021.

He also starred in the films To Live and Die in L.A. (1985), Manhunter (1986), Young Guns II (1990), Fear (1996), The Contender (2000), Detachment (2011), and Seeking a Friend for the End of the World (2012).^[2]