| Călui | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Olt County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Gura Căluiu, Călui, Oboga |
| Length: | 24km (15miles) |
| Source1 Coordinates: | 44.5436°N 23.9447°W |
| Source1 Elevation: | 246m (807feet) |
| Mouth: | Olteț |
| Mouth Location: | Near Oboga |
| Mouth Coordinates: | 44.4039°N 24.1072°W |
| Mouth Elevation: | 132m (433feet) |
| Basin Size: | 69km2 |
| Tributaries Right: | Căluieț |
The Călui is a right tributary of the river Olteț in Romania. It discharges into the Olteț near Oboga. Its length is 24km (15miles) and its basin size is 69km2.