哈尼夫（阿拉伯语：حنيف）是伊斯兰教术语，词根ḥ-n-f意即“拒绝”，就是“拒绝偶像崇拜”的意思 (Lane 1893) 。广义指的是所有追随先知易卜拉欣（亚伯拉罕）的教导，崇拜唯一神者，包括犹太人、基督徒和穆斯林。尤指蒙昧时代时（伊斯兰教复兴前）反对偶像崇拜，信仰一神论的人，包括没有信仰具体宗教，只崇拜一神的人和早期的阿拉伯基督徒（反对三位一体的）。

Ḥanīf (Arabic:حنيف‎, Ḥanīf; plural: حنفاء, ḥunafā') meaning "revert" refers to one who, according to Islamic belief, maintained the pure monotheism of the patriarch Abraham. More specifically, in Islamic thought, they are the people who, during the period known as the Pre-Islamic period or Age of Ignorance, were seen to have rejected idolatry and retained some or all of the tenets of the religion of Abraham (إبراهيم, Ibrāhīm) which was "submission to God" (Allah) in its purest form.