Cognomen Morgan-Graham (Morgan-Graham 
) , all over the world, is a very rare last name. The cognomen Morgan-Graham is habitual in Jamaica, where it is a rare surname, Australia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Morgan, and a last name Graham.
| VARIANT | COUNTRY |
|---|---|
| Morgan-Graham | Australia, United States, Jamaica |