Isma'il ibn Salih ibn Ali al-Hashimi
| Isma'il ibn Salih ibn Ali al-Hashimi  إسماعيل بن صالح بن علي الهاشمي | |
|---|---|
| Governor of Egypt | |
| In office 797 – 798 (one year) | |
| Monarch | Harun al-Rashīd | 
| Preceded by | Ubaydallah ibn al-Mahdi | 
| Succeeded by | Isma'il ibn Isa ibn Musa al-Hashimi | 
| Governor of Aleppo and Qinnasrin | |
| In office 798 – c. 802 | |
| Monarch | Harun al-Rashīd | 
| Personal details | |
| Relations | Abbasid dynasty | 
| Parent | 
 | 
| Relatives | Al-Fadl ibn Salih (brother) Ibrahim ibn Salih (brother) Abd al-Malik ibn Salih (brother) | 
Ismāʿīl ibn Ṣāliḥ ibn ʿAlī al-Hāshimī (Arabic: إسماعيل بن صالح بن علي الهاشمي) was an eighth century Abbasid governor of Egypt and Aleppo.
A member of the Abbasid family, he was a son of Salih ibn Ali and a first cousin of the first two Abbasid caliphs al-Saffah (r. 750–754) and al-Mansur (r. 754–775). During the reign of Harun al-Rashid (r. 786–809) he was appointed as governor of Egypt in 797. After an administration lasting slightly less than a year, he was dismissed from that province and instead posted to Aleppo and Qinnasrin, which he proceeded to hold for an unspecified length of time.