1909 Országos Bajnokság I (men's water polo) was the sixth water polo championship in Hungary. There were two teams who played one match for the title.
Final list #TeamMWDLG+G−P1.MÚE11007522.Ferencvárosi TC1001570
* M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point
OB I 1909Champions Magyar ÚE4th Title
Sources Gyarmati Dezső: Aranykor (Hérodotosz Könyvkiadó és Értékesítő Bt., Budapest, 2002.)