| Al-Abbas ibn al-Ma'mun العباس إبن المأمون | |||||
|---|---|---|---|---|---|
| Died | 838 | ||||
| Burial | |||||
| |||||
| Dynasty | Abbasid | ||||
| Father | al-Ma'mun | ||||
| Mother | Sundus | ||||
| Religion | Sunni Islam | ||||
| Military career | |||||
| Allegiance | Abbasid Caliphate | ||||
| Service |  Abbasid army | ||||
| Years of service | c. 828–838 | ||||
| Battles / wars | Arab–Byzantine wars | ||||
| Relations | al-Amin (uncle) al-Mu'tasim (uncle) al-Qasim (uncle) | ||||
Al-Abbas ibn al-Ma'mun (Arabic: العباس بن المأمون) (died 838 CE) was an Abbasid prince and general, the son of the Abbasid caliph al-Ma'mun (r. 813–833). A distinguished military leader in the Arab–Byzantine wars, he was passed over in the succession in favour of his uncle al-Mu'tasim (r. 833–842). In 838, he was arrested for his involvement in a failed conspiracy against al-Mu'tasim, and died in prison.