Cognomen Mercham (Mercham 
) , around the globe, is a very rare family name. The surname Mercham is characteristic of Latin America and the Caribbean, particularly Mexico, where it is a very rare surname, Ecuador, and Brazil. Much less frequently, Mercham is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mercham | Brazil, United States, Mexico, Ecuador, Philippines |
| john mercham English Member of Parliament |
|