| Colpach-Bas | |
| Native Name: | Nidderkolpech |
| Native Name Lang: | lb |
| Other Name: | Niedercolpach |
| Settlement Type: | Village |
| Pushpin Map: | Luxembourg |
| Pushpin Map Caption: | Location within Luxembourg |
| Subdivision Type: | Country |
| Subdivision Name: | Luxembourg |
| Subdivision Type1: | Commune |
| Subdivision Name1: | Ell |
| Population Total: | 147 |
| Population As Of: | 2024 |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
Colpach-Bas is a village in the commune of Ell, in western Luxembourg., the village has a population of 147.[1]
Colpach Castle dates from the beginning of the 14th century when it was a stronghold. It was adapted as a manor house in the 18th century. Today it is a convalescent centre run by the Red Cross.[2]