Al-Ma'mun (disambiguation)
| Pronunciation | al-Ma'mun  Mamun  | 
|---|---|
| Gender | Male | 
| Origin | |
| Word/name | Semitic (Arabic) | 
| Meaning | Trustworthy, Trusted, Reliable. | 
| Region of origin | Arabia (Middle East) | 
Al-Ma'mun (Arabic: المأمون) was the seventh Abbasid caliph, ruling from 813 to his death in 833. The name 'al-Ma'mun' means 'trustworthy', 'trusted', and 'reliable', and was also borne by:
- Ma'mun I ibn Muhammad (died 997), Khwarazmshah
 - Ma'mun II (died 1017), Khwarazmshah
 - al-Ma'mun al-Bata'ihi (died 1128), vizier to the Fatimid caliph al-Amir
 - al-Mamun of Toledo (died 1075), Taifa king and a member of the Banu Dil-Nun dynasty
 - Idris al-Ma'mun (died 1232), was a rival Almohad ruler who reigned from 1229-1232