Outeiro de Rei is a municipality located in the province of Lugo, in the autonomous community of Galicia, Spain.

It belongs to the comarca of Lugo.

The Galician word outeiro is derived from Latin altarium, meaning a high or elevated territory.

[2] De Rei means "of the king" in Galician, and can be found as a suffix in multiple other toponyms of Galicia.

This article about a location in the autonomous community of Galicia, Spain is a stub.