Sitt al-Mulk
| Sitt al-Mulk | |
|---|---|
| Regent of the Fatimid Caliphate | |
| Reign | 1021–1023 | 
| Predecessor | al-Hakim bi-Amr Allah | 
| Successor | Ali az-Zahir | 
| Born | 970 al-Mansuriya | 
| Died | 5 February 1023 (aged 52–53) Cairo | 
| Dynasty | Fatimid | 
| Father | al-Aziz Billah | 
| Mother | al-Sayyida al-Aziziyya | 
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Sitt al-Mulk (Arabic: ست الملك, lit. 'Lady of the Kingdom'; 970–1023) was a Fatimid princess. After the disappearance of her half-brother, the caliph al-Hakim bi-Amr Allah, in 1021, she was instrumental in securing the succession of her nephew Ali az-Zahir, and acted as the de facto ruler of the state until her death on 5 February 1023.