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. In 2016, it had a population of 5047 according to the INE.
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.
43°09′00″N 7°17′00″W / 43.1500°N 7.2833°W / 43.1500; -7.2833