| Umm Hakim bint Yahya أم حكيم بنت يحيى | |
| Zawjat al-khalifa | |
| Succession: | Consort of the Umayyad caliph |
| Reign: | 724 – 742/43 |
| Reign-Type: | Tenure |
| Spouse: | Hisham |
| Issue: | |
| Issue-Type: | Children |
| Full Name: | Umm Hakim bint Yahya ibn al-Hakam |
| Birth Place: | Syria/Hejaz, Umayyad Caliphate |
| Death Place: | Damascus, Umayyad Caliphate |
| Dynasty: | Umayyad |
| Father: | Yahya ibn al-Hakam |
| Mother: | Zaynab bint Abd al-Rahman |
| Religion: | Islam |
Umm Hakim bint Yahya (Arabic: أم حكيم بنت يحيى) was an 8th-century Umayyad noblewoman and famous principal wife of the tenth Umayyad caliph Hisham ibn Abd al-Malik.
At first, One of Yahya's daughters, Amina, was wed to Abd al-Malik's son, Hisham.[1] however Amina died and Hisham married Yahya other daughter, Umm Hakim.
Umm Hakim was Hisham's favored wife, the daughter of Yahya ibn al-Hakam, brother of Hisham's grandfather caliph Marwan I, and Zaynab bint Abd al-Rahman, the granddaughter of the Syrian conquest commander al-Harith ibn Hisham of the Banu Makhzum. Umm Hakim, like her mother, was well known for her beauty and love for drink. She gave Hisham five sons, including Sulayman, Maslama, Yazid al-Afqam, and Mu'awiya.
Umm Hakim also lobbied for her son Maslama's succession. during her husband Hisham's reign.