Globally, Alcyr (Alcyr 
) is a rare predominantly boy's, but very infrequently girly first name. The first name Alcyr is habitual in Latin America and the Caribbean, particularly Brazil, where it is a rare predominantly boy's, but scarcely feminine name.
| VARIANT | COUNTRY |
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| Alcyr | Brazil, United States, Venezuela |
| alcyr pires vermelho Brazilian pianist (1906-1994), BR (b. 1906) |
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| alcyr mendonça Brazilian politician (1920-1992), BR (b. 1920) |
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| alcyr moraes de sousa person identified in the Museu da Pessoa collection, BR (b. 1958) |
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| alcyr oliveira researcher |
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Cruz, Barros, Junior, Vieira, Martins, Machado, Almeida, Andrade, Cardoso, Barbosa, Pereira, Ribeiro, Tavares, Freitas, Monteiro, Mendonca, Carvalho, Ferreira, Oliveira, Rodrigues, Guimaraes, Goncalves, Coelho, Correa, Campos, Amorim, Reis, Dias, Lima, Neto, Silva, Sousa, Souza, Alves, Costa, Cunha, Fernandes, Braga, Rocha, Gomes, Leite, Lopes, Netto, Faria, Filho, Moraes, Santos, Araujo, Ramos, and Nascimento