| Surna | |
| Pushpin Map: | Møre og Romsdal#Trøndelag#Norway |
| Pushpin Map Caption: | Location of the river |
| Subdivision Type1: | Country |
| Subdivision Name1: | Norway |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Trøndelag, Møre og Romsdal |
| Subdivision Type3: | Municipalities |
| Subdivision Name3: | Rindal, Surnadal |
| Length: | 45km (28miles) |
| Source1: | Tiosen |
| Source1 Location: | Rindal, Trøndelag, Norway |
| Source1 Coordinates: | 63.095°N 9.2975°W |
| Mouth: | Surnadalsøra |
| Mouth Location: | Surnadal, Møre og Romsdal, Norway |
| Mouth Coordinates: | 62.9733°N 8.6686°W |
| River System: | Tiåa and Lomunda |
| Tributaries Left: | Gåstjønna, Bølu, Folda, Vinddøla |
The Surna is a river in Trøndelag and Møre og Romsdal counties in Norway. It runs from Rindal Municipality (in Trøndelag) to Surnadal Municipality (in Møre og Romsdal). The 45km (28miles) long river begins near Øvre Rindal at the confluence of the rivers Tiåa and Lomunda. The river then flows west and empties into the Surnadalsfjorden at the village of Surnadalsøra. Several smaller rivers flow into the Surna from the Trollheimen mountains to the south. The Foldsjøen and Gråsjøen reservoirs along the Folda River also flow into the Surna. The river is a good fishing river.[1] The Brandåa, Gryta, and Kysinga hydroelectric power stations operate on tributaries of the river.[2] [3] [4]