Worldwide, Necesario (Necesario 
) is a very rare mostly male, but seldom female first name. The forename Necesario is habitual in South-eastern Asia, particularly Philippines, where it is a very rare largely boy's, but uncommonly female name. Much more frequently, Necesario is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Necesario | Saudi Arabia, Singapore, Philippines, Australia, United States |