Surname Kilayo (Kilayo 
) , in all the world, is a rare last name. The surname Kilayo is habitual in Tanzania, where it is a rare surname, the Democratic Republic of the Congo, and Honduras, where it is a very rare surname. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, Tanzania, and Philippines. Much less frequently, Kilayo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kilayo | Philippines, Honduras, Tanzania, India, Democratic Republic of the Congo |