The 2012–13 Long Beach State 49ers men's basketball team represented California State University, Long Beach during the 2012–13 NCAA Division I men's basketball season.

The 49ers, led by sixth year head coach Dan Monson, played their home games at Walter Pyramid and were members of the Big West Conference.

He responded by averaging 16.5 points and 6.7 rebounds per game and leading the 49ers to another regular season Big West championship.

At the end of the season, Ennis was named Big West Player of the Year and an AP honorable mention All-American.

Following the close of his senior year, Ennis was named to the Reese's College All-Star Game, where he led the East team in scoring with 13 points, including a pair of baskets that clinched the game.