| Official Name: | Kaštel |
| Other Name: | Castelvenere |
| Settlement Type: | Village |
| Pushpin Map: | Croatia |
| Pushpin Label Position: | bottom |
| Coordinates: | 45.4489°N 13.6572°W |
| Subdivision Type: | Country |
| Subdivision Type1: | County |
| Subdivision Name1: | Istria |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Buje |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 8.9 |
| Population As Of: | 2021 |
| Population Total: | 606 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 52460 Buje |
| Area Code: | 052 |
Kaštel (It. Castelvenere or Castelvenere di Pirano) is a village in Istria, Croatia, located on the border with Slovenia. It is connected by the D21 highway.
According to the 2021 census, its population was 606.