Around the world, همايون (همايون 
, Homayoun 
, Homayoon 
) is quite a rare masculine given name. The forename همايون is characteristic of Afghanistan, where it is quite a rare masculine name, Iran, where it is a rare masculine name, and Saudi Arabia. In absolute terms, it is the most numerous in Afghanistan, Iran, and the United States. Very seldom, همايون is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| همايون | Afghanistan, Iraq, Saudi Arabia, Iran |
| Homayoun | Bangladesh, Canada, Iran, United States, Afghanistan |
| Homayoon | Canada, Iran, United States, Indonesia, Afghanistan |