Surname Osei-Adu (Osei-Adu 
) , across the world, is a rare family name. The last name Osei-Adu is characteristic of Ghana, where it is quite a rare surname, Netherlands, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it is commonest in Ghana, the United States, and Netherlands. Parts of the name also exists independently as a last name Osei, and a last name Adu.
| VARIANT | COUNTRY |
|---|---|
| Osei-Adu | United Kingdom, United States, Netherlands, Ghana |