Family name Iffah (Iffah 
) , throughout the world, is quite a rare last name. The surname Iffah is characteristic of South-eastern Asia, particularly Brunei, where it is quite a rare surname, Malaysia, and Singapore, where it is a rare surname. In absolute terms, the name is most common in South-eastern Asia, particularly Indonesia, Malaysia, and Singapore. More prevalently, Iffah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iffah | Thailand, Brunei, Singapore, Indonesia, Malaysia |