| Kostentsi | |
| Native Name: | Костенци |
| Native Name Lang: | bg |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Subdivision Type: | Country |
| Subdivision Name: |  Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Montana |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Berkovitsa |
| Area Total Km2: | 19053 |
| Population As Of: | 2015 |
| Population Total: | 63 |
| Timezone: | EET |
| Utc Offset: | +2 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +3 |
| Pushpin Map Caption: | Location in Bulgaria |
| Coordinates: | 43.2833°N 23.1208°W |
| Elevation M: | 450 |
| Postal Code Type: | Postal code |
| Postal Code: | 3518 |
| Area Code: | 0953 |
| Registration Plate: | М |
Kostentsi is a village in Berkovitsa Municipality, Montana Province, north-western Bulgaria.[1]