Umm al-Banin bint Abd al-Aziz
Umm al-Banin bint Abd al-Aziz () was an Umayyad princess, principal wife of the Umayyad caliph al-Walid I and sister of eight Umayyad caliph Umar ibn Abd al-Aziz.

Biography
Umm al-Banin was the daughter of Umayyad prince and powerful governor of Egypt Abd al-Aziz and his third wife, Layla bint Suhayl.

Her grandfather, Marwan had named Abd al-Aziz his second heir after Abd al-Malik. The latter, however, wanted his son al-Walid I () to succeed him, and Abd al-Aziz was persuaded not to object to this change. In the event, Abd al-Aziz died on 12 May 705 CE (13 Jumada I AH 86), four months before Abd al-Malik. Abd al-Malik nominated his son as heir shortly after her father's death.

Umm al-Banin married her cousin al-Walid, Historian Marsham notes al-Walid's marriage to his first cousin, Umm al-Banin, "tied the fortunes" of Abd al-Malik and her father, Abd al-Aziz ibn Marwan. From her al-Walid had his sons Abd al-Aziz, Muhammad, Marwan, and Anbasa, and a daughter, A'isha. Her elder son Abd al-Aziz was regarded by his father as "the , the most forceful personality, amongst his sons", according to the historian C. E. Bosworth.

Her husband died 715 and was succeeded by nominated heir Sulayman after her brother-in law Sulayman's death. Her brother became caliph because her brother-in-law nominated her brother as successor on his death bed.

Umm al-Banin was known as she was a relative to eleven Umayyad caliphs out of fourteen.

Caliphs related to her
Umm al-Banin related to Umayyad ruling house both paternally and maternally. She was contemporary and related to several powerful Umayyad caliphs.

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690s deaths
720s deaths
Year of birth unknown
Women from the Umayyad Caliphate
8th-century people from the Umayyad Caliphate
Arab women
Arab princesses
8th-century Arab people