| Official Name: | Mahajeby |
| Pushpin Map: | Madagascar |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Madagascar |
| Pushpin Mapsize: | 180 |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Bongolava |
| Subdivision Type2: | District |
| Subdivision Name2: | Fenoarivobe |
| Population As Of: | 2018 |
| Population Total: | 9,741 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EAT |
| Utc Offset: | 3 |
| Coordinates: | -18.05°N 46°W |
| Elevation M: | 663 |
| Postal Code Type: | Postal code |
| Postal Code: | 115 |
Mahajeby is a municipality in Madagascar. It belongs to the district of Fenoarivobe, which is a part of Bongolava Region. The population of the commune was estimated to be approximately 9,741 in 2018.[1]
It lies between the Mahavavy Sud River.
A populations of Propithecus coronatus was recently found in a forest remains nearby.[2]