| Official Name: | Onsbjerg |
| Settlement Type: | Village |
| Pushpin Map: | Denmark Central Denmark Region |
| Pushpin Label Position: | above |
| Pushpin Map Caption: | Location in the Central Denmark Region |
| Subdivision Type: | Country |
| Subdivision Name: | Denmark |
| Subdivision Type1: | Region |
| Subdivision Name1: | Central Denmark |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Samsø |
| Population As Of: | 2024 |
| Population: | 254 |
| Population Footnotes: | [1] |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Coordinates: | 55.85°N 10.5783°W |
Onsbjerg is a village on the island of Samsø in Denmark. It is located in Samsø Municipality
The village is named after the nearby hill of Dyret, which was formerly named Odinsbjerg.
Onsbjerg Church (also known as Holy Cross Church. Danish: Hellig Kors Kirke) was built in the 1200s. [2]