Worldwide, Gláucio (Glaucio 
, Gláucio ) is quite a common masculine first name. The given name Gláucio is characteristic of Brazil, where it is quite a rare male name, Portugal, where it is a rare male name, and the United States, where it is an extremely rare male name.
| VARIANT | COUNTRY |
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| Glaucio | Spain, United States, Germany, Brazil, Portugal |
| Gláucio | Brazil, United States |
| gláucio gil Brazilian actor, BR (b. 1932) |
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| gláucio ary dillon soares brazilian sociologist, researcher and university teacher, BR (b. 1934) |
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| gláucio terra university professor and researcher active in Brazil, BR (b. 1972) |
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| gláucio de jesus carvalho Brazilian association football player, BR (b. 1975) |
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| gláucio ricardo werner de castro researcher |
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| gláucio a amaral researcher |
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| gláucio gomes Brazilian actor, BR |
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| gláucio r nagurniak researcher |
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| gláucio de castro júnior researcher at the University of Brasilia |
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| gláucio lira lima Brazilian association football player, BR (b. 1986) |
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| gláucio jose de araujo silva association football player, BR (b. 1994) |
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Vaz, Santana, Almeida, Andrade, Araújo, Cardoso, Pereira, Rezende, Ribeiro, Júnior, França, Freitas, Carvalho, Carneiro, Brandão, Pinheiro, Teixeira, Ferreira, Oliveira, Rodrigues, Fernandes, Guimarães, Menezes, Moreira, Machado, Xavier, Melo, Reis, Dias, Lima, Moura, Silva, Souza, Alves, Assed, Costa, Gonçalves, Ramos, Dutra, Gomes, Lopes, Santos, Castro, Campos, Coelho, Barros, Duarte, Junior, Rocha, and Nascimento