Gustav Otto (12 January 1883 – 28 February 1926) was a German aircraft and aircraft engine designer and manufacturer.
Otto was born in Cologne to Nicolaus August Otto, the founder of N. A. Otto & Cie. and inventor of the four-stroke internal combustion engine.
Gustav Otto Flugmaschinenfabrik was founded in 1910, and was renamed to Bayerische Flugzeugwerke (BFW) in early 1916. In 1917 they merged with Rapp Motorenwerke to become Bayerische Motoren Werke GmbH (BMW).
After the war Gustav established Otto-Werke AG of Munich and introduced the first Flottweg motorcycle in 1921.
Sources: en.wikipedia.org, et al.