Cognomen Castañeta (Castagnet 
, Castanet 
, Castañeta 
) , across the world, is quite a common last name. The last name Castañeta is habitual in Bolivia, where it is quite a rare surname, France, and Uruguay. Not in comparison with a country's population, it most frequently occurs in France, Bolivia, and Italy. Very seldom, Castañeta is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Castagnet | Italy, Uruguay, United States, Argentina, France |
| Castanet | Mexico, United States, Poland, France, Brazil |
| Castañeta | Spain, Argentina, Bolivia, Chile |
| Castagnetta | United Kingdom, Italy, United States, France, Brazil |
Castagnette, and Castaneta
Mery, Alicia, Adrian, Baldyr, Beymar, Daniel, German, Grover, Jhonny, Wascar, Mariana, Alberto, Antonio, Arminda, Abraham, Rodrigo, Roberto, Giovana, Julieta, Reynaldo, Leonardo, Estainer, Sergio, Miguel, Monica, Marcos, Alex, Raul, Rosa, Luis, Jose, Juan, Ivan, Omar, Maria, Marco, Fernando, Sonia, Lucas, Jaime, Jorge, Julia, Julio, Jhony, Edwin, Felix, Oscar, Willy, David, and Alejandro