2009–10 OB I bajnoksag season
The 2009–10 OB I bajnokság season was the 73rd season of the OB I bajnokság, the top level of ice hockey in Hungary. Six teams participated in the league, and SAPA Fehervar AV 19 won the championship.
First round
| Rank | Team | GP | W | OTW | OTL | L | Goals | Pts | 
|---|---|---|---|---|---|---|---|---|
| 1. | Dunaújvárosi Acélbikák | 16 | 4 | 1 | 1 | 0 | 89:37 | 45 | 
| 2. | Budapest Stars | 16 | 6 | 1 | 2 | 7 | 39:49 | 22 | 
| 3. | Újpesti TE | 16 | 6 | 1 | 1 | 8 | 55:68 | 21 | 
| 4. | Ferencvárosi TC | 16 | 5 | 2 | 1 | 8 | 54:63 | 20 | 
| 5. | Miskolci Jegesmedvék Jégkorong Sportegyesület | 16 | 2 | 2 | 2 | 10 | 46:66 | 12 | 
Second round
| Rank | Team | GP | W | OTW | OTL | L | Goals | Pts | 
|---|---|---|---|---|---|---|---|---|
| 1. | Dunaújvárosi Acélbikák | 16 | 10 | 1 | 2 | 3 | 61:38 | 40 (6) | 
| 2. | Budapest Stars | 16 | 10 | 2 | 1 | 3 | 61:42 | 39 (4) | 
| 3. | Ferencvárosi TC | 16 | 7 | 1 | 0 | 8 | 48:49 | 22 | 
| 4. | Újpesti TE | 16 | 5 | 0 | 2 | 9 | 60:66 | 19 (2) | 
| 5. | Miskolci Jegesmedvék Jégkorong Sportegyesület | 16 | 3 | 1 | 0 | 12 | 33:68 | 11 | 
Playoffs
Semifinals
- Dunaujvarosi Acelbikak - Budapest Stars 3-2 on series
 - SAPA Fehervar AV 19 - Ferencvarosi TC 3-0 on series
 
Final
- SAPA Fehervar AV 19 - Dunaujvarosi Acelbikak 4-0 on series
 
3rd place
- Budapest Stars - Ferencvarosi TC 3-1 on series