Cognomen Longuino (Longuino 
) , in all the world, is a very rare last name. The cognomen Longuino is habitual in Mexico, where it is a very rare surname, Brazil, and Philippines, where it is an extremely rare surname. Also, Longuino is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Longuino | Brazil, Peru, Mexico, Philippines |