Sayyida Ahad bint Abdullah bin Hamad Al Busaidiyah (عهد بنت عبدالله بن حمد البوسعيدية; born 4 April 1970) is the wife of the Sultan of Oman, Haitham bin Tariq.
She is the daughter of Sayyid Abdullah bin Hamad Al-Busaidi, a former Undersecretary for Justice in the Ministry of Justice, Awqaf, and Islamic Affairs and former Governor of Musandam.
Her sister Sayyida Rawdah bint Abdullah is married to Sayyid Shihab bin Tariq, the brother of the Sultan of Oman, and their daughter Sayyida Meyyan is married to the Crown Prince Sayyid Theyazin on 11 November 2021 in Mazay Hall of Al Alam Palace.
She has a degree in Sociology.
Sayyida Ahad bint Abdullah and her husband, Sultan Haitham bin Tariq, have four children:
Ahad is styled: "Her Highness The Honourable Lady Sayyida Ahad Bint Abdullah Bin Hamad Al Busaidiyah".