| Oleśnica | |
| Source1 Location: | near Drogoszowice |
| Mouth Location: | near Śliwice |
| Mouth Coordinates: | 51.1149°N 17.2085°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Poland |
| Length: | 43.49 km |
| Source1 Elevation: | 202 m.a.s.l. |
| Mouth Elevation: | 118 m.a.s.l. |
| Tributaries Left: | Potok Boguszycki |
| Source1 Coordinates: | 51.3436°N 17.4975°W |
| Region: | Oleśnica County |
| Name Other: | Oleśniczanka |
| City: | Oleśnica |
The Oleśnica (pronounced: [ɔlɛɕˈɲit͡sa]; German: Oelsbach[1]) is a 43.49adj=midNaNadj=mid[2] river that is the longest right-bank tributary of the Widawa River.[3] [4]
It flows in the Lower Silesian Voivodeship in the Oleśnica and Wrocław counties. Its sources are located in the Twardogórskie Hills near Drogoszowice. It flows through the town of Oleśnica and the villages: Sokołowice, Smardzów, Raków, Brzezia Łąka.[5] It flows into the Widawa River west of the town of Brzezia Łąka. One of the river's tributaries is Potok Boguszycki.