non-believers

/N AA1 N B AH0 L IY0 V ER0 Z/
noun
  1. 1

    A person who does not believe, especially regarding religion.

Source: https://en.wiktionary.org/wiki/non-believer, https://en.wiktionary.org/wiki/non-believers, https://en.wiktionary.org/wiki/nonbeliever