Dorsey attended Louisiana State University, and played for coach Nick Saban and coach Les Miles's LSU Tigers football teams from 2004 to 2007.
As a true freshman in the 2004 season, he started in 3 out of 12 games.
On his first collegiate snap he recovered a fumble against Oregon State.
He finished the year with 18 tackles.

In 2005, he started in 1 out of 13 games.
He was among LSU's 4-player rotation at defensive tackle which included Claude Wroten and Kyle Williams.
He finished the season with 28 tackles and 3 sacks.

In 2006, Dorsey was named to the 2006 All-American team and was All-SEC.
He finished the season as the Tigers' third-leading tackler with 64 stops, including 8.5 for losses and three sacks.
Dorsey was named the SEC Defensive Lineman of the Week twice during the season.

In 2007, Dorsey started 13 of 14 games recording 69 tackles, 7 sacks, 12.5 tackles for loss, three passes defensed, and a forced fumble.
He was also named the SEC Defensive Player of the Week twice during the season.
 Following the 2007 season, he was recognized as a unanimous first-team All-American.
 He also finished ninth in the 2007 voting for the Heisman Trophy, receiving more votes than any other defensive player in the nation.
In addition, Dorsey was awarded the Bronko Nagurski Trophy, the Outland Trophy, the Lott Trophy and the Lombardi Award, becoming the only player to win all four awards.
 Dorsey was a member of LSU's 2007 BCS Championship team.
He was a key component in LSU’s drive to the BCS national title despite playing the second half of the season with knee and tailbone injuries.
Dorsey attended Louisiana State University, and played for coach Nick Saban and coach Les Miles's LSU Tigers football teams from 2004 to 2007. As a true freshman in the 2004 season, he started in 3 out of 12 games. On his first collegiate snap he recovered a fumble against Oregon State. He finished the year with 18 tackles.
In 2005, he started in 1 out of 13 games. He was among LSU's 4-player rotation at defensive tackle which included Claude Wroten and Kyle Williams. He finished the season with 28 tackles and 3 sacks.
In 2006, Dorsey was named to the 2006 All-American team and was All-SEC. He finished the season as the Tigers' third-leading tackler with 64 stops, including 8.5 for losses and three sacks. Dorsey was named the SEC Defensive Lineman of the Week twice during the season.
In 2007, Dorsey started 13 of 14 games recording 69 tackles, 7 sacks, 12.5 tackles for loss, three passes defensed, and a forced fumble. He was also named the SEC Defensive Player of the Week twice during the season.  Following the 2007 season, he was recognized as a unanimous first-team All-American.  He also finished ninth in the 2007 voting for the Heisman Trophy, receiving more votes than any other defensive player in the nation. In addition, Dorsey was awarded the Bronko Nagurski Trophy, the Outland Trophy, the Lott Trophy and the Lombardi Award, becoming the only player to win all four awards.  Dorsey was a member of LSU's 2007 BCS Championship team. He was a key component in LSU’s drive to the BCS national title despite playing the second half of the season with knee and tailbone injuries.
Glenn Dorsey