Family name Montecillo-Cruz (Montecillo-Cruz 
) , all over the world, is an extremely rare surname. The surname Montecillo-Cruz is characteristic of Northern America, particularly the United States, where it is an extremely rare surname. Parts of the name also exists independently as a last name Montecillo, and a last name Cruz.
| VARIANT | COUNTRY |
|---|---|
| Montecillo-Cruz | United States |