| Official Name: | Mariansleigh |
| Civil Parish: | Mariansleigh |
| Country: | England |
| Region: | South West England |
| Coordinates: | 50.9833°N -50°W |
| Hide Services: | Yes |
| Population: | 170 |
| Population Ref: | (2021 census) |
| Static Image: | Mariansleigh, St Mary's church - geograph.org.uk - 272389.jpg |
| Static Image Caption: | St Mary's church |
Mariansleigh is a village and civil parish in Devon, England, with a population of 170 in 2021.