| Câlniștea | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Teleorman, Giurgiu |
| Length: | 112km (70miles) |
| Source1 Coordinates: | 44.2928°N 25.3444°W |
| Source1 Elevation: | 117m (384feet) |
| Mouth: | Neajlov |
| Mouth Location: | Călugăreni |
| Mouth Coordinates: | 44.1669°N 25.9911°W |
| Basin Size: | 1748km2 |
The Câlniștea is a right tributary of the river Neajlov in Romania. It discharges into the Neajlov in Călugăreni.[1] Its length is 112km (70miles) and its basin size is 1748km2.[2] It flows through the villages Botoroaga, Târnava, Tunari, Drăgănești-Vlașca, Bujoreni, Răsuceni, Prunaru, Carapancea, Naipu, Cămineasca, Schitu, Mirău, Stoenești, Ianculești, Hulubești, Uzunu and Călugăreni.
The following rivers are tributaries to the river Câlniștea: