Southeastern Louisiana University (Southeastern) is a state-funded public university in Hammond, Louisiana, United States. It was founded in 1925 by Linus A. Sims, the principal of Hammond High School, as Hammond Junior College, located in a wing of the high school building. Sims succeeded in getting the campus moved to north Hammond in 1928, when it became known as Southeastern Louisiana College. It achieved university status in 1970.

Enrolled are 14,594 students representing 43 states and 66 countries. During the 1990s Southeastern was the fastest-growing college in the United States.[3] The university is the third largest in Louisiana.[4]

Southeastern’s colors are green and gold, and the mascot is the Lions. Southeastern’s sports teams participate in NCAA Division I (FCS for football) in the Southland Conference.