Matthew Allan Longacre (born September 21, 1991) is a former American football linebacker.

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.

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).