1990–91 Országos Bajnokság I (men's water polo)


1990–91 Országos Bajnokság I was the 85th water polo championship in Hungary.

First stage


Pld - Played; W - Won; L - Lost; PF - Points for; PA - Points against; Diff - Difference; Pts - Points.

Championship Playoff

OB I 1990–91
Champions

Újpest
23rd Title