1951 Országos Bajnokság I (men's water polo) was the 45th water polo championship in Hungary. There were ten teams who played two-round match for the title.
| Csapat | M | Gy | D | V | G+ | G− | P | |
|---|---|---|---|---|---|---|---|---|
| 1. | Bp. Dózsa (Újpest) | 18 | 16 | 2 | 0 | 114 | 33 | 34 |
| 2. | Bp. Vasas | 18 | 16 | 1 | 1 | 101 | 38 | 33 |
| 3. | Bp. Kinizsi (Ferencváros) | 18 | 10 | 2 | 6 | 92 | 54 | 22 |
| 4. | Szolnoki Dózsa | 18 | 8 | 4 | 6 | 66 | 65 | 20 |
| 5. | Egri Fáklya | 18 | 9 | 0 | 9 | 82 | 61 | 18 |
| 6. | Bp. Honvéd | 18 | 7 | 3 | 8 | 66 | 50 | 17 |
| 7. | Bp. Bástya (MTK) | 18 | 6 | 3 | 9 | 52 | 54 | 15 |
| 8. | Bp. Lokomotív | 18 | 6 | 2 | 10 | 62 | 85 | 14 |
| 9. | Bp. Előre | 18 | 2 | 2 | 14 | 26 | 126 | 6 |
| 10. | Csepeli Vasas | 18 | 0 | 1 | 17 | 27 | 122 | 1 |
* M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point
Qualification-Relegation play-offs: 1. Bp. Vörös Meteor 9, 2. Tatabányai Bányász 8, 3. Vasas Csepel Autó 6, 4. Szegedi Petőfi 5, 5. Tolnai Vörös Lobogó 2, 6. Miskolci Bástya 0 point.
Budapest: 1. Bp. Vörös Meteor 23, 2. Vasas MÁVAG 13, 3. Előre MÁVAUT 12, 4. Bp. Vörös Lobogó 11 (2), 5. Szikra Tipográfia 8 (2), 6. Bp. Haladás 8 (2), 7. Gyárépítés 1 point (2). In parentheses number of matches is missed.