| Hornstein | |
| Pushpin Map: | Austria Burgenland#Austria |
| Pushpin Mapsize: | 270 |
| Pushpin Map Caption: | Location within Burgenland##Location within Austria |
| Coordinates: | 47.8667°N 42°W |
| Subdivision Type: | Country |
| Subdivision Type1: | State |
| Subdivision Name1: | Burgenland |
| Subdivision Type2: | District |
| Subdivision Name2: | Eisenstadt-Umgebung |
| Parts Style: | para |
| Leader Title: | Mayor |
| Leader Name: | Christoph Wolf |
| Elevation M: | 273 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 2491, 7053 |
| Area Code Type: | Area code |
| Area Code: | +43 2689 |
| Website: | www.hornstein.at |
Hornstein (Croatian: Vorištan, Hungarian: Szarvkő) is a town in the district of Eisenstadt-Umgebung in the Austrian state of Burgenland.