Al-Harith ibn Sima al-Sharabi (Arabic: الحارث بن سيما الشرابي) (died 870) was the governor of Fars for the Abbasid dynasty from 869 until his death.
Al-Harith's appointment to Fars came in the aftermath of the Saffarid amir Ya'qub ibn al-Layth's recent forced entry into Shiraz, the provincial capital. Ya'qub's subsequent departure from Fars allowed the caliphal government to briefly reestablish their authority over the province, and al-Harith and other officials arrived to take control of local affairs.
Al-Harith's governorship was brief. He was soon challenged by a local Kharijite, Muhammad ibn Wasil. The two sides engaged each other in battle and al-Harith was killed; Muhammad then seized control of Fars.