| Stâmnic | |
| Name Other: | Chiojd |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Prahova, Buzău |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Starchiojd, Rotarea, Cătina |
| Length: | 12km (07miles) |
| Mouth: | Bâsca Chiojdului |
| Mouth Location: | Cătina |
| Mouth Coordinates: | 45.2978°N 26.2395°W |
| Progression: | Bâsca Chiojdului→ |
| Basin Size: | 69km2 |
| Tributaries Right: | Bătrâneanca |
The Stâmnic (also: Chiojd) is a right tributary of the river Bâsca Chiojdului in Romania. Its length is 12km (07miles) and its basin size is 69km2.[1] It flows into the Bâsca Chiojdului in Cătina.