Petritsi
Petritsi 
    Πετρίτσι  | |
|---|---|
| Coordinates: 41°16′N 23°18′E / 41.267°N 23.300°E | |
| Country | Greece | 
| Administrative region | Central Macedonia | 
| Regional unit | Serres | 
| Municipality | Sintiki | 
| Area | |
| • Municipal unit | 253.1 km2 (97.7 sq mi) | 
| Population  (2021)  | |
| • Municipal unit | 3,900 | 
| • Municipal unit density | 15/km2 (40/sq mi) | 
| Time zone | UTC+2 (EET) | 
| • Summer (DST) | UTC+3 (EEST) | 
| Vehicle registration | ΕΡ | 
Petritsi (Greek: Πετρίτσι) is a former municipality in the Serres regional unit, Greece. Since the 2011 local government reform it is part of the municipality Sintiki, of which it is a municipal unit, with a population of 3,900 (2021). The municipal unit has an area of 253.075 km2. The seat of the municipality was in Neo Petritsi.