Family name Iamm (Iamm 
) , globally, is an extremely rare last name. The last name Iamm is habitual in Greece, where it is a very rare surname, and India, where it is an extremely rare surname. More frequently, Iamm is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Iamm | India, United States, Malaysia, Greece, Brazil |