Around the globe, Castoro (Castor 
, Castoro 
) is quite a common masculine given name. The given name Castoro is characteristic of Tanzania, where it is quite a rare masculine name, Philippines, and Spain. More prevalently, Castoro is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Castor | Tanzania, Mexico, Brazil, United States, Philippines |
| Castoro | Italy, Brazil, United States, Philippines, France |
Castoro is also a name for the fictitious and mythical characters: Castor , the The Hunger Games character, The Hunger Games: Mockingjay – Part 2; Castor Troy , character in Face/Off; Castor Oyl , the cartoon character and Castor , the operatic character in the opera Castor et Pollux.