| Lubsza | |
| Mouth Location: | Lusatian Neisse |
| Mouth Coordinates: | 51.9539°N 14.7224°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Poland |
Lubsza is a river in Lubusz Voivodeship, Poland. It is a tributary of Lusatian Neisse (Nysa Łużycka) near Gubin.
In the 13th Century, the medieval town of Gubin was founded to serve as an important settlement for craftsmanship and trade due to its position near this river and the Nysa Łużycka River.[1]