Wilhelm Schönmann (Schoenmann) (1889–1970) was a German chess master.
He tied for 8-9th at Hamburg 1910 (DSB Congress, Hauptturnier B), shared 2nd at Hamburg 1913 (Paul Krüger won) , won a simultan game against Emanuel Lasker at Hamburg 1914,[1] and took 15th at Mannheim 1914 (the 19th DSB-Congress, Hauptturnier A, B. Hallegua won).[2]
After World War I, he took 2nd at Berlin 1920 (DSB-Congress), took 4th at Kiel 1920 (Heinrich Wagner won), shared 1st at Vienna 1926 (B tournament), tied for 6-7th at Bremen 1927 (Efim Bogoljubow won), tied for 10-11th at Magdeburg 1927 (DSB-Congress, Rudolf Spielmann won),[3] won at Lübeck 1928 (Quadrangular), shared 1st at Hamburg 1930,[4] took 2nd, behind Herbert Heinicke, at Hamburg 1932, and took 8th at Aachen 1935 (the 3rd German Chess Championship, Kurt Richter won).[5]
He played for Germany in 2nd unofficial Chess Olympiad at Budapest 1926 and 2nd Chess Olympiad at The Hague 1928.[6]
After World War II, he played in several international correspondence tournaments.