Family name Dal Castel (Dal Castel 
) , in the world, is a very rare surname. The surname Dal Castel is characteristic of Italy, where it is a very rare surname, France, and Argentina, where it is an extremely rare surname. Not in comparison with a country's population, it is the most numerous in France, Italy, and Brazil.
| VARIANT | COUNTRY |
|---|---|
| Dal Castel | Italy, Brazil, Argentina, France |