| Type: | commune |
| County: | Constanța |
| Official Name: | Deleni |
| Subdivisions: | Deleni, Petroșani, Pietreni, Șipotele |
| Leader Name: | Marian Dan[1] |
| Leader Party: | PSD |
| Leader Term: | 2020 - 2024 |
| Coordinates: | 44.1°N 29°W |
| Elevation: | 122 |
| Area Total: | 178.88 |
| Population Total: | auto |
| Postal Code: | 907110 |
Deleni is a commune in Constanța County, Northern Dobruja, Romania. It is situated in the southern part of the county, west of Constanța.
The villages comprising the commune are:
The territory of the commune also includes the former villages of Poenița (historical name: Borungea, Turkish: Borunca), located at 44.0153°N 28.0106°W, disestablished by Presidential Decree in 1977, and Furca (historical name: Becter), located at 43.9975°N 28.0717°W.
At the 2021 census, Deleni had 2,388 inhabitants. At the 2011 census, there were 2,272 Romanians (98.31%), 10 Turks (0.43%), 28 Tatars (1.21%), 1 other (0.04%).
Deleni has a Humid Subtropical Climate (Cfa). It receives the most abundant rainfall in June, with an average precipitation of 69 mm; and the most scarce rainfall in February, with an average precipitation of 38 mm.
At the 2021 census, Pietreni village had a population of 799.[2]
Pietreni is situated along National Road 3, about west of the county seat, Constanța. It has an average elevation of above sea level.[3]