| Lozna | |
| Pushpin Map: | Romania |
| Subdivision Type1: | Country |
| Subdivision Name1: | Romania |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Caraș-Severin County |
| Length: | 16km (10miles) |
| Source1: | Confluence of headwaters Lozna Mare and Lozna Mică |
| Source1 Location: | Poiana Ruscă Mountains |
| Mouth: | Rusca |
| Mouth Location: | Rusca Montană |
| Mouth Coordinates: | 45.5772°N 22.449°W |
| Progression: | Rusca→ |
| Basin Size: | 63km2 |
| Tributaries Left: | Lozna Mică, Valea Cireșului, Negri, Varnița, Valea Cucii |
| Tributaries Right: | Lozna Mare, Glăvan, Valea Alunului |
The Lozna is a right tributary of the river Rusca in Romania. It starts at the confluence of headwaters Lozna Mare and Lozna Mică in the Poiana Ruscă Mountains. It flows into the Rusca in Rusca Montană.[1] Its length is 16km (10miles) and its basin size is 63km2.