Family name Izaiah (Izaiah 
) , globally, is a rare cognomen. The family name Izaiah is habitual in Malaysia, where it is a rare surname, Nigeria, where it is an extremely rare surname, and the United States. More prevalently, Izaiah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Izaiah | Malaysia, Australia, Nigeria, United States, Puerto Rico |