| Marstal Parish | |
| Native Name: | Marstal Sogn |
| Native Name Lang: | da |
| Settlement Type: | Parish |
| Coordinates: | 54.8549°N 10.5169°W |
| Subdivision Type: | Country |
| Subdivision Name: | Denmark |
| Subdivision Type1: | Region |
| Subdivision Name1: | Southern Denmark |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Ærø Municipality |
| Subdivision Type3: | Diocese |
| Subdivision Name3: | Funen |
| Population As Of: | 2022 |
| Population Total: | 2,790[1] |
| Area Code Type: | Parish number |
| Area Code: | 7714 |
Marstal Parish (da|Marstal Sogn) is a parish in the Diocese of Funen in Ærø Municipality, Denmark. The parish contains Marstal, the municipality's largest town, and Ommel, a village.