Family name Iffy (伊菲 
, Iffy 
) , globally, is a rare last name. The family name Iffy is characteristic of Nigeria, where it is a very rare surname, Pakistan, and China. More frequently, Iffy is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| 伊菲 | China |
| Iffy | Nigeria, Pakistan, United Kingdom, Democratic Republic of the Congo, China |
| leslie iffy (b. 1925) |
|