| Kostvlies | |
| Settlement Type: | Hamlet |
| Native Name Lang: | nl |
| Image Map1: | Map NL - Aa en Hunze - Kostvlies.png |
| Map Caption1: | Kostvlies in the municipality of Aa en Hunze. |
| Pushpin Label Position: | left |
| Pushpin Map Caption: | Location in the Netherlands |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Drenthe |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Aa en Hunze |
| Coordinates: | 52.9858°N 6.7989°W |
| Population Total: | 130 |
| Population As Of: | 2005 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Area Code Type: | Dialing code |
Kostvlies is a hamlet in the Dutch province of Drenthe. It is a part of the municipality of Aa en Hunze, and lies about 16 km east of Assen.
The statistical area "Kostvlies", which can also include the surrounding countryside, has a population of around 130.[1]