Muttukadu boat house (Tamil: முட்டுக்காடு படகுக் குழாம்) is a water sport facility on the East Coast Road at Muttukadu, Chennai, India, offering rowing, wind surfing, water skiing, and speedboat riding. It is a backwater area of the Bay of Bengal located 36 km from the city centre and 23 km from Adyar on the way to Mamallapuram. The boat house was inaugurated in 1984 and has 15 row boats, 27 speedboats and 9 pedal boats. The water depth varies between 3 ft and 6 ft. It is owned and operated by the Tamil Nadu Tourism Development Corporation (TTDC). The boating spot receives more than 4,000 visitors every weekend.

In July 2009, TTDC inaugurated a new bamboo boathouse and a floating boat jetty at the Muttukadu boating facility. The boathouse, with a special roof made of bamboo, has a lounge, from where visitors can watch the boats, and a restaurant. The building has been constructed at a cost of 8.7 million and the floating jetty at a cost of 1.2 million. A couple of high-speed aqua scooters with a seating capacity of three was also introduced at a cost of 1.35 million, which has received good patronage. The scooters can sail at an average speed of 120 km/hour.

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.