Cognomen Melkisedec (Melkisedec 
) , in the entire world, is a very rare surname. The last name Melkisedec is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a rare surname, Honduras, where it is a very rare surname, and Colombia. More frequently, Melkisedec is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Melkisedec | Nicaragua, Philippines, Mexico, Colombia, Democratic Republic of the Congo |