In the world, Neils (Neils 
) is a rare mostly masculine, but seldom female first name. The first name Neils is habitual in Trinidad and Tobago, where it is quite a rare girly name, Bolivia, where it is a rare boy's name, and Denmark. In absolute terms, the name is most common in the United States, Peru, and Philippines. Likewise, Neils is the last name as well as the forename.