Last name Villacastin (Villacastin 
) , globally, is quite a rare cognomen. The family name Villacastin is habitual in Philippines, where it is quite a rare surname, Papua New Guinea, and United Arab Emirates, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Philippines, Spain, and Papua New Guinea. Very seldom, Villacastin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Villacastin | Papua New Guinea, Saudi Arabia, Spain, Philippines, United Arab Emirates |