private, coeducational institution of higher learning in Lewiston, Maine, U.S. It is a liberal arts college that offers bachelor's degree programs in literature, languages, social sciences, life and physical sciences, philosophy, and other areas. Research facilities include the Bates-Morse Mountain Conservation Area on Maine's Atlantic coast. Total enrollment is approximately 1,600.

The college was founded by a group of Freewill Baptists in 1855 as the Parsonfield Academy in the town of Parsonfield. The next year the academy moved to Lewiston, and it became the Maine State Seminary. It was made a college in 1863 and named for Benjamin E. Bates, a leading benefactor. From the start the college was committed to egalitarian education, admitting students regardless of race, religion, or sex. Poet John Ciardi (Ciardi, John) and U.S. Senator Edmund S. Muskie were educated there.