Otto Rüster (Ruester, Ruster) (born 1895, date of death unknown) was a German chess master.
He represented Germany in 2nd unofficial Chess Olympiad at Budapest 1926.[1] He played several times in Silesian Chess Congress,[2] and won at Breslau 1925 (the 4th SCC). After World War II, he lived in East Germany, and played at Jena 1953 (the 4th GDR-ch).[3]
Before and after the war, he participated in many correspondence chess tournaments.