Last name Welen (Welen 
) , across the world, is a very rare cognomen. The family name Welen is characteristic of Sweden, where it is a rare surname, Germany, where it is a very rare surname, and Australia. Measured by absolute frequency, it is the most numerous in Sweden, Germany, and the United States. More prevalently, Welen is the forename as well as the last name.
Maia, Soares, Araujo, Campos, Coelho, Barros, Vieira, Martins, Marques, Moreira, Santana, Almeida, Barbosa, Pereira, Ribeiro, Gonzaga, Carvalho, Nogueira, Ferreira, Oliveira, Rodriguez, Rodrigues, Santos, Mendes, Moraes, Viana, Melo, Rosa, Reis, Dias, Gama, Lima, Moura, Silva, Sousa, Souza, Domingues, Alves, Brito, Paula, Ramos, Rocha, Dutra, Gomes, Lopes, Jesus, Neves, Nunes, Costa, and Nascimento