Surname Carneiro Leão (Carneiro Leão 
) , in all the world, is an extremely rare cognomen. The surname Carneiro Leão is habitual in Latin America and the Caribbean, particularly Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Carneiro Leão | Brazil |
|
|
antônio carneiro leão Brazilian educator (1887-1966), BR (b. 1887) |
|
| henrique hermeto carneiro leão Brazilian doctor (1847-1916), BR (b. 1847) |
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