Surname Cooi (Cooi 
) , in the entire world, is a rare last name. The last name Cooi is habitual in Malaysia, where it is a rare surname, Sudan, and the United States, where it is an extremely rare surname. Also, Cooi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cooi | United States, Sudan, Malaysia |