1930 Országos Bajnokság I (men's water polo)

1930 Országos Bajnokság I (men's water polo) was the 24th water polo championship in Hungary. There were nine teams who played one-round match for the title.

Final list
 * M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point 

2. Class
Eastern Division: 1. NSC 10, 2. Orosházi TK 8, 3. Egri TE 6, 4. Debreceni EAC 4, 5. Postás SE 2, 6. Debreceni UE 0 points.

Western Division: 1. Pécsi AC 7, 2. Tatabányai SC 6, 3. MAFC 5, 4. Kaposvári Turul 2, 5. Pannonia UE Sopron 0 points.

Final: NSC-PAC 6:5