| Kostelec nad Vltavou | |
| Settlement Type: | Municipality |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | South Bohemian |
| Subdivision Type2: | District |
| Subdivision Name2: | Písek |
| Pushpin Map: | Czech Republic |
| Pushpin Relief: | 1 |
| Pushpin Map Caption: | Location in the Czech Republic |
| Coordinates: | 49.5°N 14.2117°W |
| Established Title: | First mentioned |
| Established Date: | 1318 |
| Area Total Km2: | 32.81 |
| Elevation M: | 457 |
| Population As Of: | 2024-01-01 |
| Population Footnotes: | [1] |
| Population Total: | 398 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 398 58 |
Kostelec nad Vltavou is a municipality and village in Písek District in the South Bohemian Region of the Czech Republic. It has about 400 inhabitants.
Kostelec nad Vltavou lies approximately 23km (14miles) north of Písek, 62km (39miles) north of České Budějovice, and 67km (42miles) south of Prague.
The villages of Přílepov, Sobědraž and Zahrádka are administrative parts of Kostelec nad Vltavou.