Cognomen Rapatsalahy (Rapatsalahy 
) , all around the world, is a rare last name. The cognomen Rapatsalahy is habitual in Sub-Saharan Africa, particularly Madagascar, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Rapatsalahy | Madagascar |
| paul rapatsalahy Malagasy journalist and writer (1911-1988), MG (b. 1911) |
|