Surname Kerio (Kerio 
) , all over the world, is a common last name. The cognomen Kerio is habitual in Pakistan, where it is quite a rare surname, Kenya, and Bulgaria, where it is a rare surname. Not in comparison with a country's population, it is commonest in Pakistan, Kenya, and France. Much less frequently, Kerio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kerio | Kenya, Pakistan, India, France, Indonesia |