Cognomen Segundo Cirilo (Segundo Cirilo 
) , throughout the world, is an extremely rare last name. The last name Segundo Cirilo is habitual in Latin America and the Caribbean, particularly Chile, where it is a very rare surname. Much more prevalently, Segundo Cirilo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Segundo Cirilo | Ecuador, Chile, Peru |