| Official Name: | Soamanonga |
| Pushpin Map: | Madagascar |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Madagascar |
| Pushpin Mapsize: | 180 |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Atsimo-Andrefana |
| Subdivision Type2: | District |
| Subdivision Name2: | Betioky Sud |
| Population As Of: | 2001 |
| Population Total: | 9000 |
| Population Blank1 Title: | Ethnicities |
| Population Blank1: | Mahafaly |
| Population Blank2 Title: | Religions |
| Timezone: | EAT |
| Utc Offset: | 3 |
| Coordinates: | -24.35°N 75°W |
| Elevation Footnotes: | [1] |
| Elevation M: | 443 |
| Postal Code Type: | Postal code |
| Postal Code: | 612 |
Soamanonga is a rural municipality in southwest Madagascar. It belongs to the district of Betioky Sud, which is a part of Atsimo-Andrefana Region. The population of the commune was estimated to be approximately 9,000 in 2001.
Only primary schooling is available. The majority 65% of the population of the commune are farmers, while an additional 35% receive their livelihood from raising livestock. The most important crops is rice but also mais and pistachios[2] are important agricultural products for this municipality. Services provide employment for 5% of the population.
In Ankinany, a fokontany (village) of this municipality, coal deposits were discovered in 2007.[3]