Major Baden Fletcher Smyth Baden-Powell, FS, FRAS, FRMetS (22 May 1860–3 October 1937) was the youngest son of Rev. Prof. Baden Powell and brother of Robert Baden-Powell, Warington Baden-Powell and Agnes Baden-Powell.
Baden-Powell was a military aviation pioneer and a Fellow and later President of the Royal Aeronautical Society and a Fellow of the Royal Geographical Society. He was one of the first to see the use of aviation in a military context. He built his first balloons and planes together with his sister Agnes.
Baden-Powell was the first who brought flying-based activities into Scouting, in the form of kite and model aeroplane building. He can be considered the founder of Air Scouting despite he thought it was hardly feasible to have special 'Air Scouts'.
Baden-Powell was President and later District Commissioner of a North London District, was between 1918 and 1935 District Commissioner of Sevenoaks District, Kent, and was from 1923, until his death, Headquarters Commissioner for Aviation.