| Ismar River | |
| River | |
| Countries | Romania |
|---|---|
| Counties | Giurgiu County |
| Tributaries | |
| - left | Negrile, Pimoreanca Mogoş, Patrani, Seaca |
| - right | Călărăşanca, Buciumeni, Dani, Albele, Mihalache, Tiuleţ |
| Villages | Radu Vodă, Dimitrie Cantemir, Izvoarele, Chiriacu, Petru Rareș |
| Source | |
| - elevation | 85 m (279 ft) |
| - coordinates | |
| Mouth | Câlniştea |
| - elevation | 69 m (226 ft) |
| - coordinates | |
The Ismar River is a tributary of the Câlniştea River in Romania.