Matthew Allan Longacre (born September 21, 1991) is an American football outside linebacker who is currently a free agent. He played college football at Northwest Missouri State and signed with the St. Louis Rams as an undrafted free agent in 2015.
Longacre attended and played college football for Northwest Missouri State University, where he was named All-America defensive player of the year in 2013. He was first team All American in 2013 and 2014. The Bearcats won the 2013 NCAA Division II national championship. At the time he was ranked second all-time in school history sacks (30.5) and tackles-for-loss (47.0).
After going undrafted in the 2015 NFL Draft, Longacre signed with the St. Louis Rams on May 8, 2015. He was waived by the Rams on September 5, 2015 and was signed to the practice squad the next day. On November 6, he was promoted to the active roster.
In the 2017 season, Longacre played in 14 games, recording 23 tackles and 5.5 sacks. He was placed on injured reserve on December 27, 2017 with a back injury.
On April 16, 2018, Longacre sign his restricted free agent tender. He played 13 games in the 2018 season, finishing with 17 tackles and a sack.