| Deleni | |
| Name Other: | Deleni-patak |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Mureș County |
| Subdivision Type3: | Villages |
| Subdivision Name3: | Deleni, Ideciu de Jos |
| Length: | 13km (08miles) |
| Mouth: | Mureș |
| Mouth Location: | Ideciu de Jos |
| Mouth Coordinates: | 46.8069°N 24.7434°W |
| Basin Size: | 30km2 |
The Deleni (hu| Deleni-patak) is a left tributary of the river Mureș in Transylvania, Romania. It discharges into the Mureș in Ideciu de Jos. Its length is 13km (08miles) and its basin size is 30km2.