2009–10 Liga I
| Season | 2009–10 | 
|---|---|
| Champions | CFR Cluj | 
| Relegated | Internațional Politehnica Iași Ceahlăul Piatra Neamț Unirea Alba Iulia | 
| Champions League | CFR Cluj Unirea Urziceni | 
| Europa League | Vaslui Steaua București Timișoara Dinamo București | 
| Matches played | 306 | 
| Goals scored | 711 (2.32 per match) | 
| Top goalscorer | Andrei Cristea (16) | 
| Biggest home win | Timișoara 6–0 Ceahlăul Timișoara 6–0 Unirea Brașov 6–0 Bistrița | 
| Biggest away win | Gaz Metan  2–6 Timișoara Ceahlăul 0–4 Dinamo Ceahlăul 0–4 Rapid | 
| Highest scoring | Urziceni 4–4 Dinamo Gaz Metan 2–6 Timișoara | 
| Longest winning run | 6 matches Vaslui | 
| Longest unbeaten run | 16 matches Urziceni | 
| Longest winless run | 14 matches Iași | 
| Longest losing run | 7 matches Alba Iulia | 
| ← 2008–09  2010–11 →  | |
The 2009–10 Liga I was the ninety-second season of Liga I, the top-level football league of Romania. Unirea Urziceni were the defending champions.