Mullineaux has 80 career points on 35 goals and 45 assists through three seasons.
The midfielder has scooped up 80 career ground balls.
“FSU met all of my expectations for my academics and the lacrosse was unsurpassed,” Mullineaux said. “The coaching staff was 100 percent dedicated to assisted me in the process.”
Mullineaux plays club lacrosse with Team Maryland. He was also considering Montevallo, Walsh, and Desales University.
Mullineaux has earned an all-star nod for the Mid-Atlantic Showcase.
Mullineaux is the first player reported to LaxRecords.com to have committed to Frostburg.