In the entire world, Onís (Onis 
, Onís 
) is a rare epicene first name. The given name Onís is characteristic of Nicaragua, where it is a rare principally boy's, but scarcely feminine name, the Dominican Republic, where it is a rare feminine name, and Romania, where it is a rare unisex name. Not in comparison with a country's population, the name is most common in Indonesia, the United States, and Nigeria. Also, Onís is the last name as well as the forename.