Cognomen Treppa (Treppa 
) , in all the world, is a rare family name. The family name Treppa is habitual in Poland, where it is a rare surname, the United States, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it most frequently occurs in the United States, Poland, and Germany. Also, Treppa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Treppa | Canada, United States, Germany, Poland, New Zealand |