Muhammad ibn Abdallah ibn Tahir
| Muhammad ibn Abdallah ibn Tahir | |
|---|---|
| Chief of security (Shurtah) in Baghdad Governor of Baghdad | |
| In office 851–867 | |
| Monarchs | al-Mutawakkil al-Muntasir al-Musta'in al-Mu'tazz | 
| Preceded by | Muhammad ibn Ishaq | 
| Succeeded by | Ubaydallah ibn Abdallah | 
| Governor of Medina and Mecca | |
| In office 862–867 | |
| Monarchs | al-Musta'in, al-Mu'tazz | 
| Preceded by | Ali ibn al-Husayn ibn Isma'il | 
| Succeeded by | Ishaq ibn Muhammad ibn Yusuf al-Ja'fari | 
| Personal details | |
| Born | 824/5 (AH 209) | 
| Died | November 867 | 
| Parent | Abdallah ibn Tahir | 
Abu'l-Abbas Muhammad ibn Abdallah ibn Tahir (Arabic: محمد بن عبدالله بن طاهر) (824/5 – November 867) was a Tahirid family member, who served the Abbasid Caliphate as governor and chief of police (sahib al-shurta) of Baghdad from 851 until his death, during a particularly troubled period in the city's history, which included its siege during the civil war of 865–866, in which he played a major role. He also served in the 860s as governor of Baghdad, Mecca and Medina, and was noted as a scholar, a poet and a patron of artists and scholars.