Surname Cnha (Cnha 
) , in the world, is a very rare last name. The cognomen Cnha is characteristic of Portugal, where it is a very rare surname, Brazil, where it is an extremely rare surname, and India. Much less frequently, Cnha is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cnha | India, Brazil, United States, Portugal |