| Official Name: | Masoarivo |
| Pushpin Map: | Madagascar |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Madagascar |
| Pushpin Mapsize: | 180 |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Melaky |
| Subdivision Type2: | District |
| Subdivision Name2: | Antsalova |
| Area Footnotes: | [1] |
| Area Total Km2: | 957.71 |
| Population As Of: | 2001 |
| Population Total: | 8000 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EAT |
| Utc Offset: | 3 |
| Coordinates: | -19.0333°N 64°W |
| Elevation Footnotes: | [2] |
| Elevation M: | 9 |
| Postal Code Type: | Postal code |
| Postal Code: | 406 |
Masoarivo is a rural municipality in western Madagascar. It belongs to the district of Antsalova, which is a part of the region of Melaky. The population of the commune was estimated to be approximately 8,000 in 2001 commune census.
Masoarivo is served by a local airport and riverine harbour. Primary and junior level secondary education are available in town. The majority 54% of the population of the commune are farmers, while an additional 23% receives their livelihood from raising livestock. The most important crop is rice, while other important products are maize, cassava and bananas. Services provide employment for 3% of the population. Additionally fishing employs 20% of the population.[3]
This municipality borders to Trangahy in the West, to Antsalova in the North, and to the Mozambique Channel in the West.It is located at 120 km from Antsalova.[4]
It has a small harbour.
The National Road No.8 crosses the municipality, though it is practicable only in the dry season.