| Official Name: | Ambatomainty |
| Mapsize: | 100px |
| Pushpin Map: | Madagascar |
| Pushpin Map Caption: | Location in Madagascar |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Melaky |
| Subdivision Type2: | Ambatomainty District |
| Subdivision Name2: | District |
| Population As Of: | 2019 |
| Population Footnotes: | Census |
| Population Note: | 14,589 |
| Coordinates: | -17.6833°N 45.65°W |
| Blank1 Name Sec2: | Climate |
| Blank1 Info Sec2: | Aw |
| Postal Code Type: | Postal code |
| Postal Code: | 404 |
Ambatomainty is a rural town in western Madagascar. It is the principal town in the Ambatomainty District, Melaky Region, approximately 220 kilometres north-west of the capital Antananarivo.
It is served by Ambatomainty Airport and the unpaved National road 8c from Morafenobe (108 km).