In all the world, Ndahayo (Ndahayo 
) is a very rare boy's forename. The forename Ndahayo is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is a very rare male name. Likewise, Ndahayo is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Ndahayo | Rwanda, United States, Tanzania, France, Democratic Republic of the Congo |