Last name Koimo (Koimo 
) , around the world, is a rare surname. The surname Koimo is habitual in Papua New Guinea, where it is quite a rare surname, and Australia, where it is a very rare surname. Much less frequently, Koimo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Koimo | Papua New Guinea, India, Tanzania, Australia |