Cognomen Jairon (Jairon 
) , around the world, is quite a rare last name. The surname Jairon is habitual in Latin America and the Caribbean, particularly Honduras, where it is quite a common surname, Nicaragua, where it is quite a rare surname, and Venezuela, where it is a very rare surname. In absolute terms, it is the most numerous in Honduras, Nicaragua, and Philippines. More prevalently, Jairon is the forename as well as the last name.
Melo, Vieira, Flores, Ortega, Martins, Sanchez, Almeida, Aguilar, Cardoso, Barbosa, Batista, Pereira, Ramirez, Ribeiro, Vasquez, Martinez, Carvalho, Castillo, Ferreira, Oliveira, Rodriguez, Rodrigues, Junior, Garcia, Castro, Araujo, Cruz, Reis, Diaz, Dias, Lima, Mejia, Silva, Sousa, Souza, Alves, Hernandez, Costa, Ramos, Rocha, Reyes, Gomez, Gomes, Lopez, Lopes, Jesus, Santos, Soares, Perez, and Nascimento