| Cazacu River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Prahova County |
| Source | |
| - location | Baiu Mountains, Mount Cazacu |
| - elevation | 1,580 m (5,184 ft) |
| - coordinates | |
| Mouth | Azuga |
| - elevation | 1,040 m (3,412 ft) |
| - coordinates | |
The Cazacu River is a tributary of the Azuga River in Romania.