| Official Name: | Ernzen |
| Native Name: | Lerenz |
| Native Name Lang: | lb |
| Settlement Type: | Village |
| Pushpin Map: | Luxembourg |
| Coordinates: | 49.7726°N 6.221°W |
| Subdivision Type: | Country |
| Subdivision Name: | Luxembourg |
| Subdivision Type1: | Region |
| Subdivision Name1: | Mersch |
| Subdivision Type2: | Commune |
| Subdivision Name2: | Larochette |
| Population Total: | 540 |
| Population As Of: | 2024 |
| Timezone1: | Central European Time |
| Timezone Dst: | Central European Summer Time |
Ernzen is a small village in the commune of Larochette, in central Luxembourg.
As of 2024, the town has a population of 540.[1]
In the south of Ernzen are active stone quarries, as well as ponds from former ones.