| Official Name: | Jasenak |
| Settlement Type: | Village |
| Pushpin Label Position: | bottom |
| Subdivision Type: | Country |
| Subdivision Name: |  Serbia |
| Subdivision Type1: | District |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Obrenovac |
| Unit Pref: | Metric |
| Area Footnotes: | [1] |
| Area Total Km2: | 11.21 |
| Population As Of: | 2011 |
| Population Total: | 670 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 44.6136°N 20.2511°W |
| Elevation M: | 118 |
Jasenak is a village located in the municipality of Obrenovac, Belgrade, Serbia. As of 2011 census, it has a population of 670 inhabitants.