The Crozer Theological Seminary was a Baptist seminary located in Upland, Pennsylvania, and founded in 1868. It was named after the wealthy industrialist, John Price Crozer.

Martin Luther King Jr. was a student at Crozer Theological Seminary from 1948 to 1951, being elected student body president and graduating with a Bachelor of Divinity degree.

In 1970, the seminary merged with the Rochester Theological Seminary, forming the Colgate Rochester Crozer Divinity School in Rochester, New York and the seminary's Old Main building was subsequently used as office space by Crozer Hospital (now part of the Crozer-Chester Medical Center.) The Old Main building is a three-story, F-shaped, stucco-coated stone building with three pavilions connected by a corridor with flanking rooms. Each of the pavilions is topped by a gable roof and cupola, the largest cupola being on the central pavilion. The seminary's grounds are now the Crozer Arboretum.

The Old Main building in Upland was listed on the National Register of Historic Places in 1973.