| Øster Hornum | |
| Settlement Type: | Town |
| Pushpin Map: | Denmark#Denmark North Jutland Region |
| Pushpin Map Caption: | Location in Denmark |
| Coordinates: | 56.9358°N 9.7547°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Denmark |
| Subdivision Type2: | Region |
| Subdivision Name2: | North Jutland Region |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Rebild Municipality |
| Area Urban Km2: | 0.7 |
| Population As Of: | 2024 |
| Population Urban: | 1040 |
| Population Density Urban Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | DK-9530 Støvring |
Øster Hornum is a small town, with a population of 1,040 (1 January 2024),[1] in Rebild Municipality, North Jutland Region in Denmark. It is located 18 km southwest of Aalborg.
Øster Hornum Church is located on the western outskirts of the town.[2]