Across the world, Castana (Castana 
) is a very rare mostly boy's, but seldom female first name. Much more prevalently, Castana is the last name as well as the forename.
Ms, Beppe, Rizal, Daria, David, Greta, Lucas, Luisa, Lynda, Jesse, Tomas, Naomi, Fabio, Marisa, Marili, Sandra, Shaira, Silene, Serena, Andrea, Ashley, Carlos, Cacho, Catia, Cathy, Anita, Pol, Mary, Mark, Braz, Paul, Gaia, Lily, Luis, Luiz, John, Camila, Nora, Vida, Faty, Ines, Maria, Marco, Malia, Mirko, Salvo, Savio, Alfio, Vito, and Corina