Family name Kaiyum (Kaiyum 
, Кайюм 
) , all over the world, is quite a common surname. The cognomen Kaiyum is characteristic of Western Asia, particularly Oman, where it is quite a rare surname, Bahrain, and Qatar. Not in comparison with a country's population, it is the most numerous in Bangladesh, India, and Saudi Arabia. Also, Kaiyum is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaiyum | Saudi Arabia, Oman, Bangladesh, Malaysia, India |
| Кайюм | Ukraine, Russia, Kazakhstan, United States |