| Competition: | OB I |
| Season: | 1928 |
| Winners: | III. Kerületi TVE |
| Prevseason: | 1927 |
| Nextseason: | 1929 |
1928 Országos Bajnokság I (men's water polo) was the 22nd water polo championship in Hungary. There were seven teams who played one round match for the title.
| Team | M | W | D | L | G+ | G− | P | |
|---|---|---|---|---|---|---|---|---|
| 1. | III. ker. TVE | 6 | 5 | 0 | 1 | 38 | 6 | 10 |
| 2. | Ferencvárosi TC | 6 | 4 | 1 | 1 | 30 | 8 | 9 |
| 3. | Újpesti TE | 6 | 4 | 0 | 2 | 33 | 14 | 8 |
| 4. | MAC | 6 | 3 | 1 | 2 | 21 | 10 | 7 |
| 5. | MTK | 6 | 3 | 0 | 3 | 21 | 12 | 6 |
| 6. | Nemzeti SC | 6 | 1 | 0 | 5 | 8 | 35 | 2 |
| 7. | Óbudai TE | 6 | 0 | 0 | 6 | 4 | 70 | 0 |
* M: Matches W: Win D: Drawn L: Lost G+: Goals earned G−: Goals got P: Point
1. OTE 8, 2. BSZKRT SE 4, 3. BEAC 4 pont, Postás and VAC cancelled their participation.
1. Szegedi UE, 2. MOVE Eger SE, 3. Orosházi TK, 4. Tatabányai SC.