Corey Lemonier (/lɛmɒnjeɪ/; born November 19, 1991) is a former American football linebacker. He was drafted by the San Francisco 49ers in the third round of the 2013 NFL Draft. He played college football at Auburn.

Lemonier was born in Hialeah, Florida to Henry and Francoise Lemonier, who are hardworking, Haitian immigrants.^[1] He attended Hialeah High School, and played for the Hialeah Thoroughbreds high school football team. He recorded 50 tackles and 10 sacks as a junior, and played in the 2010 Under Armour All-America Game.

Considered a four-star recruit by Rivals.com, he was ranked the 3rd best weakside defensive end in the nation.^[2] He accepted a scholarship to Auburn over offers from LSU, Florida State, and Tennessee.

Lemonier enrolled in Auburn University, where he played for the Auburn Tigers football team from 2010 to 2012. As a freshman in 2010, he started one of 14 games, recording 17 tackles and two quarterback sacks. He had three tackles in the tigers' victory in the 2011 BCS National Championship Game. As a sophomore in 2011, he was a first-team All-SEC selection after recording 47 tackles and 9.5 sacks.^[3] In his junior season in 2012, he recorded 34 tackles and 5.5 sacks in 12 games. He decided to forgo his senior season at Auburn and entered the 2013 NFL Draft.