Henry Philip Folland was an English aviation engineer and aircraft designer.
He worked at the Royal Aircraft Factory at Farnborough from 1912,where he was the lead designer on the S.E.5 during the First World War. He also designed the Ruston Proctor Aerial Target, an anti-Zeppelin pilotless aircraft to use A M Lows control systems.
He left the Royal Aircraft Factory in 1917, joining the Nieuport & General Aircraft company as chief designer designing the Nieuport Nighthawk, which was adopted as a standard fighter by the Royal Air Force but did not enter service owing to the failure of its engine.Nieuport & General ceased operations in 1920 and his services were taken up by the Gloster Aircraft Company, who had built Nighthawks under license during the First World War, joining them in 1921.He was the chief designer for Glosters for many years,and numbered among his successes the Bamel racer—winner of the aerial Derby in 1921, '22 and '23—and the Gloster I I I , IV and V Schneider Trophy racing seaplanes. Fighters bearing the Folland stamp were the Grebe, Gamecock, Gambet, Goldfinch, Gauntlet and Gladiator biplanes, and the F.5/34.
He leftthe company in 1937, following the takeover of Gloster by Hawker, feeling that Hawker designs would be favoured over his own. He brought the British Marine Aircraft Company at Hample, near Southampton, renaming it Folland Aircraft Limited.