Worldwide, Cacius (Cacius 
) is a very rare boy's first name. The forename Cacius is habitual in South Africa, where it is a very rare male name, and Brazil. Very seldom, Cacius is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Cacius | South Africa, Philippines, Nigeria, United States, Brazil |
Clay, Toledo, Ferraz, Machado, Mulenga, Pereira, Peixoto, Tamaki, Roberto, Negrini, Ferrari, Mahlatji, Rodrigues, Guimaraes, Fernandes, Ribeiro, Junior, Garcon, Bucchi, Cruz, Lobo, Maria, Maepa, Silva, Souza, Schuh, Alves, Assis, Costa, Perez, Dixon, Gelin, Fedei, Santos, Palangchao, and Salvatierra