Siddig El Tahir El Fadil El Siddig Abdurrahman Mohammed Ahmed Abdel Karim El Mahdi (born 21 November 1965) is a Sudanese-born English actor and director known professionally as Siddig El Fadil and subsequently as Alexander Siddig.

Siddig is best known for his roles as Dr. Julian Bashir in the television series Star Trek: Deep Space Nine, former terrorist Hamri Al-Assad in the sixth season of the series 24, Doran Martell in Game of Thrones, and Ra's al Ghul in Gotham. He also starred in the films Syriana (2005), Hannibal (2006), A Lost Man (2007), Cairo Time (2009) and Inescapable (2012).