Siddig El Tahir El Fadil El Siddig Abderrahman Mohammed Ahmed Abdel Karim El Mahdi (Arabic: صدّيق الطاهر الفاضل الصدّيق عبدالرحمن محمد أحمد عبدالكريم المهدي Ṣiddīq aṭ-Ṭāhir al-Fāḍil aṣ-Ṣiddīq ʿAbd ur-Raḥman Muḥammad ʾAḥmad ʿAbd ul-Karīm al-Mahdī; born 21 November 1965 in Omdurman, Sudan) is a Sudanese-born British actor.
He is known by the stage names Siddig El Fadil through the mid-1990s and Alexander Siddig since. He is known for playing Dr. Julian Bashir in the television series Star Trek: Deep Space Nine, but has plenty of high-profile film and television roles under his belt due to his engaging performances and mastery of accents. He is the Trope Namer (kinda) for Estrogen Brigade, as his was the first to be created online, back in 1993. The second was Patrick Stewart.
Through his mother's side of the family he is the nephew of actor Malcolm McDowell. His father is a great-grandson of Muhammad Ahmad, a famous 19th century Sudanese religious and Rebel Leader, and one of his uncles, Sadiq al-Mahdi, was prime minister of Sudan twice. He was married to and has a son with DS9 co-star Nana Visitor, though they divorced in 2001.
- 2000 Vertical Limit as Kareem Nazir
- 2002 Reign of Fire as Ajay
- 2005 Kingdom of Heaven as Imad ad-Din al-Isfahani
- 2005 Syriana as Prince Nasir Al-Subaai
- 2008 Doomsday as Hatcher
- 2009 Cairo Time as Tareq Khalifa
- 2010 Clash of the Titans as Hermes
- 2012 Inescapable as Adib
- 2013 The Fifth Estate as Dr. Tarek Haliseh
- 2019 21 Bridges as Adi
- 1993–1999 Star Trek: Deep Space Nine as Lt. (j.g.) / Lt. Julian Bashir, M.D.
- 2007 24 as Hamri Al-Assad
- 2010 Strike Back as Zahir Sharq
- 2011 Primeval as Phillip Burton
- 2013-2014 Da Vinci's Demons as Al-Rahim
- 2013 Atlantis as King Minos
- 2015-2016 Game of Thrones as Doran Martell
- 2017 The Kennedys After Camelot as Aristotle Onassis
- 2017-2018 Gotham as Ra's al Ghul
- 2019 The Spy as Ahmed Suidani