1931 Országos Bajnokság I (men's water polo) was the 25th water polo championship in Hungary. There were nine teams who played match for the title.
Final list #TeamMWDLG+G−P1.Újpesti TE88006113162.III. ker. TVE8701325143.MAC85124815114.MOVE Eger SE85032515105.MTK8413301696.Szegedi UE8215192957.Ferencvárosi TC8215183458.BSZKRT SE810764529.Nemzeti SC80087740
* M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point
OB I 1931Champions Újpest2nd Title
See also History of water polo
Sources Gyarmati Dezső: Aranykor (Hérodotosz Könyvkiadó és Értékesítő Bt., Budapest, 2002.) Magyar Sport Almanach 1931-1934