ÿAbd al-RaḥmÃÂn ibn ÿAbd AllÃÂh ibn ÿUthmÃÂn ibn ÿAbd AllÃÂh ibn Rabëÿa al-Thaqafë (), called Ibn Umm al-Ḥakam (), was a governor and military leader in the early Umayyad Caliphate. He was a nephew of the Caliph MuÿÃÂwiya I through the latter's sister, Umm al-Ḥakam, and her Thaqafë husband.
According to al-Ṭabarë, Ibn Umm al-Ḥakam campaigned in Byzantine territory in 673. In 678, his uncle appointed him governor of Kà «fa in place of al-á¸Âaḥḥak ibn Qays. According to Ibn KhayyÃÂt, however, this took place a year earlier. According to al-Ṭabarë, he governed for two years. He dealt with a Kharijite rebellion, but his rule was considered oppressive and he was forced out by the Kà «fans. In 679, he was replaced by al-NuÿmÃÂn ibn Bashër.
Having been ousted from Kà «fa, Ibn Umm al-Ḥakam was appointed governor of Egypt by his uncle. According to al-Ṭabarë, he was prevented from taking up his office by MuÿÃÂwiya ibn Ḥudayj al-Sakà «në, who reportedly said, "by my life, you shall not treat us the way you treated our Kà «fan brothers". This story is also found in Ibn Taghrëbardë and Ibn al-Athër, but it al-Sakà «në is known to have died in 672. The cause of the discrepancy in the accounts is unclear.
According to al-BalÃÂdhurë, Ibn Umm al-Ḥakam also served as governor of the Jazëra and Mosul. The Caliph ÿAbd al-Malik ibn MarwÃÂn (685âÂÂ705) appointed him governor of Damascus.
The prominent Andalusian leaders TammÃÂm ibn ÿAlḳama al-Thaqafë and TammÃÂm ibn ÿAlḳama al-Wazër were descended from a mawlà(freedman) of Ibn Umm al-Ḥakam and took their nisba from him.