| al-Qahir القاهر | |
|---|---|
| Caliph Commander of the Faithful | |
 Gold dinar of al-Qahir | |
| 19th Caliph of the Abbasid Caliphate | |
| Reign | 1 March 929 – 2 March 929 (1st reign) |
| Predecessor | al-Muqtadir |
| Successor | al-Muqtadir |
| Reign | 31 October 932 – 24 April 934 (2nd reign) |
| Predecessor | al-Muqtadir |
| Successor | al-Radi |
| Born | 899 Baghdad, Iraq |
| Died | 950 (aged 50–51) Baghdad |
| Consort | Umm al-Mansur |
| Issue | Mansur |
| Dynasty | Abbasid |
| Father | al-Mu'tadid |
| Mother | Fitnah |
| Religion | Sunni Islam |
Abū al-Manṣūr Muḥammad ibn Aḥmad ibn Ṭalḥa ibn Jaʿfar ibn Muḥammad ibn Hārūn al-Qāhir bi'Llāh (Arabic: أبو المنصور محمد بن أحمد المعتضد, romanized: Abū al-Manṣūr Muḥammad ibn Aḥmad al-Muʿtaḍid), usually known simply by his regnal title al-Qahir bi'Llah (Arabic: القاهر بالله, romanized: al-Qāhir bi'Llāh, lit. 'Victorious by the will of God'), was the nineteenth caliph of the Abbasid Caliphate from 932 to 934. He was born 286 AH (899 C.E.) and died 339 AH (950 C.E.).