| Official Name: | O Incio |
| Subdivision Type3: | Comarca |
| Subdivision Name3: | Sarria |
| Pushpin Map: | Spain |
| Pushpin Map Caption: | Location in Spain |
| Coordinates: | 42.6486°N -7.23°W |
| Leader Title: | Mayor |
| Leader Name: | Ángel Camino Copa |
| Area Total Km2: | 146.09 |
| Population Density Km2: | auto |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
O Incio is a municipality in the province of Lugo, in the autonomous community of Galicia, northwestern Spain. It belongs to the comarca of Sarria.
The main attraction is the small church of Hospital, surrounded by oak and chestnut forest in a western orientated narrow valley. It is a very well preserved Romanesque church from the 12th century, in of grey marble. Part of the decoration is taken from the ruins of the nearby Roman town of Lucus Augusti (modern day Lugo).
The municipality has 28 parishes and 187 populated places.[1] The total population was 1533 inhabitants in 2021.[2]