Sūrat al-Ikhlāṣ (Arabic: سورة الإخلاص‎) (The Fidelity), aka Sūrat al-Tawḥīd (Arabic: سورة التوحيد‎) (Monotheism) is the 112th Sura of the Qur'an. It is a short declaration of tawhid, God's absolute unity, consisting of 4 ayat. Al-Ikhlas means "the purity" or "the refining".

It is disputed whether this is a Meccan or Madinan sura. The former seems more probable, particularly since it seems to be have been alluded to by Bilal, who, when he was being tortured by his cruel master, is said to have repeated "Ahad, Ahad!" (unique, referring as here to Allah). It is reported from Ubayy ibn Ka'b that it was revealed after the polytheists asked "O Muhammad! Tell us the lineage of your Lord."