Across the world, Iaphet (Japheth 
, Iaphet) is quite a common predominantly male, but scarcely feminine given name. The given name Iaphet is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is quite a rare boy's name, Kenya, and the Democratic Republic of the Congo, where it is quite a rare mostly boy's, but seldom female name. Measured by absolute frequency, it is the most numerous in Sub-Saharan Africa, particularly Tanzania, Nigeria, and the Democratic Republic of the Congo. Much less frequently, Iaphet is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Japheth | Tanzania, Ghana, Democratic Republic of the Congo, Kenya, Nigeria |