1918 Országos Bajnokság I (men's water polo) was the 12th water polo championship in Hungary. There were two teams who played one match for the title.
Final list #TeamMWDLG+G−P1.Ferencvárosi TC11007122.MAFC1001170
* M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point
OB I 1918Champions Ferencváros5th Title
Sources Gyarmati Dezső: Aranykor (Hérodotosz Könyvkiadó és Értékesítő Bt., Budapest, 2002.)