Cognomen Geyni (Geyni 
) , worldwide, is a very rare surname. The cognomen Geyni is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a rare surname, Nicaragua, where it is a very rare surname, and Venezuela. Measured by absolute frequency, this name is the most popular in Latin America and the Caribbean, particularly Mexico, Honduras, and Venezuela. Likewise, Geyni is the forename as well as the last name.