The 99 names of Allah (Arabic: أسماء الله الحسنى Asmāʾ Allāh al-Ḥusnā, Beautiful Names of Allah) are the names of God in Islam. They are described in the Quran and Sunnah, among other places.
According to hadith there is a special group of 99 names, but no enumeration of them. Thus the exact list is not agreed upon, and the names of God (as adjectives, word constructs, or otherwise) exceed a total of 99 in the Quran and Sunnah. According to a hadith narrated by Abdullah ibn Mas'ud, some of the names of God have also been hidden from mankind