Cognomen Iofan (Иофан 
, Iofan 
) , in the world, is a very rare family name. The last name Iofan is habitual in Russia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Iofan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Иофан | Russia |
| Iofan | United States |