| Kostenets | |
| Native Name: | Костенец |
| Settlement Type: | Village |
| Pushpin Map: | Bulgaria |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location of Kostenets within Bulgaria |
| Coordinates: | 42.2667°N 72°W |
| Subdivision Type: | Country |
| Subdivision Name: | Bulgaria |
| Subdivision Type1: | Province |
| Subdivision Name1: | Sofia |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Kostenets |
| Leader Party: | NDSV |
| Leader Title: | Mayor |
| Leader Name: | Georgi Anchin |
| Unit Pref: | Metric |
| Area Total Km2: | 109,381 |
| Elevation M: | 689 |
| Population Footnotes: | [1] |
| Population As Of: | 2015 |
| Population Total: | 3617 |
| Population Density Km2: | auto |
| Timezone1: | EET |
| Utc Offset1: | +2 |
| Timezone1 Dst: | EEST |
| Utc Offset1 Dst: | +3 |
| Postal Code Type: | Postal Code |
| Postal Code: | 2042 |
| Area Code: | 07144 |
Kostenets (Bulgarian: Костенец) is a village in the Sofia Province southwestern Bulgaria, located in the Kostenets Municipality (which also has a separate town of Kostenets). As of the 2000 census, the village had a total population of 4,201. It ranks 14th by population of all Bulgarian villages.
Kostenets is located at the foot of the Rila mountain, 63 kilometers southeast of Sofia, about 6 kilometers south of the town of Kostenets and 35 kilometers east of Borovets. Its altitude ranges from 650 meters in the northern part to 725 meters in the southern part.
It is assumed that the area was originally settled by the Thracian tribe Bessi around 2nd century BC. The settlement was the first one in today's Kostenets municipality. During an archaeological study of the "Gorna cherkva" area were found remains of an old fortress and the footprints of an old Christian basilica from the 5th century as well as ancient pottery, Roman, Byzantine and medieval Bulgarian coins.