Cognomen Adalbero (Adalbero 
) , throughout the world, is an extremely rare surname. The surname Adalbero is characteristic of Latin America and the Caribbean, particularly Honduras, where it is a very rare surname, and Mexico, where it is an extremely rare surname. Much more frequently, Adalbero is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Adalbero | Germany, South Africa, Mexico, United States, Brazil |
Silva, Gomes, Santos, Sierra, Junior, Ndlovu, Colombi, Guimaraes, Fernandes, Sinisterra, Cavalcanti, and Nascimento