Last name Peter-Koyi (Peter-Koyi 
) , in all the world, is a very rare cognomen. The last name Peter-Koyi is habitual in Nigeria, where it is an extremely rare surname, and the United States. Likewise, Peter-Koyi is the forename as well as the last name. Parts of the name also exists independently as a first name Peter, and a last name Koyi.
| VARIANT | COUNTRY |
|---|---|
| Peter-Koyi | United States, Nigeria |