Great Marlow School Boat Club (GMSBC) is a rowing club on the River Thames, based in Marlow, Buckinghamshire, England.

[3] The following year in 2009 the club moved out of the Marlow RC boathouse and moved to Longridge Activity Centre on Quarry Wood Lane,[3] where it shares the facilities with Sir William Borlase's Grammar School Boat Club.

[4] The facilites for rowing at the Longridge Outdoor Activity Centre were limited with boats being operated from outdoor racks, which led to a 20 year search at 15 locations before an application for a new boathouse was submitted at Gossmore Lane on the opposite side of the river.

The facility called the Marlow and District Schools Boathouse is due to open in December 2025.

[5][6] The construction met with some controversy over using Green belt land to build the boathouse.