Plymouth State University (PSU), formerly Plymouth State College, is a public university in Plymouth, New Hampshire. It enrolls approximately 4,200 undergraduate students and 2,100 graduate students. The school was founded as Plymouth Normal School in 1871. Since that time it has evolved to a teachers college, a state college, and finally to a state university in 2003. PSU is part of the University System of New Hampshire.

Plymouth State is one of 311 institutions of higher learning nationwide included on the Carnegie Foundation Community Engagement Classification.[1]According to Carnegie, PSU was honored for "excellent alignment of mission, culture, leadership, resources, and practices that support dynamic and noteworthy community engagement.