Seaplane Squadron was a flying unit of the Royal Australian Air Force (RAAF) between the wars. It operated Supermarine Southampton flying boats from January 1928, as well as other types. Along with Fighter Squadron, Seaplane Squadron was a component of No. 1 Flying Training School, based at RAAF Point Cook, Victoria. Seaplane Squadron was responsible for coastal reconnaissance, training aircrew to operate seaplanes, and supporting the Royal Australian Navy. It also conducted survey flights over remote parts of Australia and mapped the Darwin–Sydney section of the Empire Air Mail Scheme route. Seaplane Squadron was disbanded in June 1939.