Family name Jónatas (Jónatas 
) , in all the world, is a very rare last name. The cognomen Jónatas is characteristic of Southern Europe, particularly Portugal, where it is a rare surname. More prevalently, Jónatas is the forename as well as the last name.
Noro, Rodrigues, Patrício, Margarida, Oliveira, Ferreira, Carvalho, Pereira, Alcobia, Machado, Marques, Xavier, Lucena, Lareiro, Duarte, Dos Santos, Bastos, Barros, Cadete, João, Luzia, Leite, Gomes, David, Rocha, Pires, Brás, Abreu, Sousa, Silva, Nuno, Barata, and Laranjeira