Cognomen Gelsy (Gelsy 
) , throughout the world, is a rare family name. The surname Gelsy is characteristic of Latin America and the Caribbean, particularly Honduras, where it is quite a rare surname, Mexico, where it is a rare surname, and Nicaragua. Not in comparison with a country's population, the name is most common in Latin America and the Caribbean, particularly Honduras, Mexico, and Venezuela. More prevalently, Gelsy is the forename as well as the last name.