Bruin, (from Dutch for "brown"), is an English folk term for brown bear.

Bruin, Bruins or BRUIN may also refer to:

Places Lake Bruin, ox-bow lake of the Mississippi River located in northeastern Louisiana Lake Bruin State Park Bruin, Kentucky, United States Bruin, Pennsylvania, United States Bruin's Slave Jail, building in Alexandria, Virginia

Sports team nicknames and mascots Ayr Bruins, a defunct Scottish ice hockey team Bellevue University, Bellevue, Nebraska Belmont University, Nashville, Tennessee Bob Jones University, Greenville, South Carolina Boston Bruins, an American NHL hockey team UCLA Bruins, a collegiate sports team located in Los Angeles, California Chilliwack Bruins, a former Canadian major junior ice hockey team in Chilliwack, British Columbia George Fox University, Newberg, Oregon Kellogg Community College, Battle Creek, Michigan New Westminster Bruins, a former Canadian major junior ice hockey team in New Westminster, British Columbia Piedmont International University, Winston-Salem, North Carolina Providence Bruins, an American AHL hockey team in Providence, Rhode Island Salt Lake Community College, Salt Lake County, Utah Sheridan College, Brampton, Ontario

Other uses Bruin (surname) Oud bruin, Belgian beer Heineken Oud Bruin, Dutch beer Yamaha Bruin 350, utility all-terrain vehicle Brown University Interactive Language, a programming language Rasmus Klump, a comic strip published as Bruin Bruin, a brown bear in the Reynard cycle fables

See also List of Bruin mascots Ursidae