Abu Dharr Al-Ghifari Al-Kinani (أَبُو ذَرّ ٱلْغِفَارِيّ ٱلْكِنَانِيّ, ʾAbū Ḏarr al-Ghifārīy al-Kinānīy), also spelled Abu Tharr or Abu Zar, born Jundab ibn Junādah (جُنْدَب ٱبْن جُنَادَة), was the fourth or fifth person converting to Islam, and a member of the Muhajirun. He belonged to the Banu Ghifar, the Kinanah tribe. No date of birth is known. He died in 652 CE, at Al-Rabadha, in the desert east of Medina.

Abu Dharr is remembered for his strict piety and also his opposition to Muawiyah during the caliphate of Uthman ibn Affan. He is venerated by Shia Muslims as one of The Four Companions, early Muslims who were followers (Shia) of Ali ibn Abi Talib.

He was regarded by many, including Ali Shariati, Muhammad Sharqawi and Sami Ayad Hanna, as a principal antecedent of Islamic socialism, or the first Islamic socialist. He protested against the accumulation of wealth by the ruling class during 'Uthmān's caliphate and urged the equitable redistribution of wealth.