Last name Isiah (Isiah 
) , across the world, is quite a rare cognomen. The surname Isiah is characteristic of Nigeria, where it is quite a rare surname, Malaysia, where it is a rare surname, and Uganda. More frequently, Isiah is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Isiah | Zimbabwe, South Africa, Malaysia, Nigeria, United States |
| alain maxime isiah Kittitian athletics competitor, KN (b. 1977) |
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| tarre isiah college basketball player (1986–1987) Arizona State |
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