Cognomen Demanya (Demanya 
) , across the world, is a rare family name. The cognomen Demanya is characteristic of Ghana, where it is quite a rare surname, the United Kingdom, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is the most numerous in Ghana, the United Kingdom, and the United States. Much less frequently, Demanya is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Demanya | United Kingdom, India, Ghana, United States, Nigeria |