ʾIlāh (Arabic: إله; plural: آلهة ʾālihat) is an Arabic term meaning "god". In Arabic, ilah refers to anyone or anything that is worshipped. The feminine is ʾilāhat (إلاهة, meaning "goddess"); with the article, it appears as al-ʾilāhat (الإلاهة). The Arabic word for God (Allāh) is thought to be derived from it (in a proposed earlier form al-Lāh) though this is disputed. ʾIlāh is cognate to Northwest Semitic ʾēl and Akkadian ilum. The word is from a Proto-Semitic archaic biliteral ʔ-L meaning "god" (possibly with a wider meaning of "strong"), which was extended to a regular triliteral by the addition of a h (as in Hebrew ʾelōah, ʾelōhim). The word is spelled either إلٰه with an optional diacritic alif to mark the ā only in Qur'anic texts or (more rarely) with a full alif, إلاه.

The term is used throughout the Quran in passages discussing the existence of God or the beliefs in other divinities by non-Muslims. Notably, the first statement of the šahādah (the Muslim confession of faith) is "There is no god (ʾilāh) except the God (Allāh)."