| Official Name: | Ifasina I |
| Pushpin Map: | Madagascar |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Madagascar |
| Pushpin Mapsize: | 180 |
| Subdivision Type: | Country |
| Subdivision Type1: | Region |
| Subdivision Name1: | Atsinanana |
| Subdivision Type2: | District |
| Subdivision Name2: | Vatomandry District |
| Population As Of: | 2019 |
| Population Footnotes: | Census |
| Population Total: | 5,101 |
| Population Blank1 Title: | Ethnicities |
| Population Blank1: | Betsimisaraka |
| Population Blank2 Title: | Religions |
| Timezone: | EAT |
| Utc Offset: | 3 |
| Coordinates: | -19.4214°N 48.6867°W |
| Postal Code Type: | Postal code |
| Postal Code: | 517 |
Ifasina I is a small village and commune in the Vatomandry District, in Atsinanana, Madagascar.
It's one of numerous lost towns on the eastern coast of Madagascar.