A boathouse (or boat house) is a building especially designed for the storage of boats, normally smaller craft for sports or leisure use. These are typically located on open water, such as on a river. Often the boats stored are rowing boats. Other boats such as punts or small motor boats may also be stored.

Sometimes, a boathouse may be the headquarters of a boat club or rowing club. It may also include a restaurant, bar,and other leisure facilities, perhaps for members of an associated club. Boathouses are also sometimes modified to include living quarters for people, or the whole structure may be used as temporary or permanent housing.

In Scandinavia, the boathouse is known as a naust, a word deriving from Old Norse naverstað. These were typically built with stone walls and timber roofs and would be either open to the sea or provided with sturdy doors. The floors would be a simple continuation of the beach sand or rock, or they might be dug down to permit a boat to sail into the boathouse.

Edinburgh Canal Society boathouse on the Union Canal. Boathouses on the River Thames at Henley-on-Thames, England. Boathouse Row on the Schuylkill River in Philadelphia, USA. Racing shells stored inside a boathouse in Israel. Boathouses on the Yarra River in Alexandra Gardens, Melbourne, Australia. Boathouses in western Norway. Stone-walled Norwegian boathouse set into a hillside. Closeup of the second boathouse at Topridge Knollwood Club boathouse on Lower Saranac Lake, USA Stone boathouse at Camp Katia on Upper St. Regis Lake, USA Boathouse at Camp Wild Air, Upper St. Regis Lake, USA Durham School Boat Club's boathouse seen from Prebends Bridge, UK Boathouse on upper Lake Zürich in Jona, Switzerland Boathouse on Lake Zürich in Zollikon, Switzerland Wikimedia Commons has media related to: Category:Boathouses