Sayf al-Din

Sayf al-Din (سيف الدين), also Saif al-Din, Sayf/Saif ad-Din, or Sayf/Saif ud-Din etc., may refer to:


 * Sayf al-Din Suri (died 1149), Ghurid king
 * Saif ad-Din Ghazi I (died 1149), Zangid emir of Mosul
 * Ghazi II Saif ud-Din (died 1180), Zangid emir of Mosul
 * al-Malik al-Adil Sayf al-Din Abu-Bakr ibn Ayyub, or just Al-Adil I, also known as "Saphadin", (1145–1218), Ayyubid sultan of Egypt
 * Sayf al-Din al-Amidi (died 1233), Islamic jurist
 * Saifuddin Aibak (died 1236), governor of Bengal
 * Saif ad-Dīn al-Malik al-ʿĀdil Abū Bakr b. Nāṣir ad-Dīn Muḥammad, or just Al-Adil II (died 1248), Ayyubid sultan of Egypt
 * Saif ad-Din Qutuz (died 1260), Mamluk sultan of Egypt
 * Saif ad-Dīn Qalawun aṣ-Ṣāliḥī (c. 1222–1290), Mamluk sultan of Egypt
 * Saif ad-Din Abu-Bakr (c. 1321–1341), Mamluk sultan of Egypt
 * Al-Malik Az-Zahir Sayf ad-Din Barquq (died 1399), Burji sultan of Egypt
 * Saifuddin Hamza Shah (died 1412), fourth Sultan of the first Ilyas dynasty of Bengal
 * Sayf ad-Din Inal (died 1461) 13th Burji Mamluk sultan of Egypt
 * Al-Ashraf Sayf al-Din Qaitbay, (c. 1417–1496), Burji Mamluk Sultan of Egypt
 * Al-Ashraf Sayf-ad-Din Barsbay, (c. 1369–1438), Burji Mamluk Sultan of Egypt
 * Sayf ad-Din Bilbay, (died 1468), Burji Mamluk Sultan of Egypt
 * Sayf ad-Din Jaqmaq, (1373–1453), Burji Mamluk Sultan of Egypt
 * Sayf ad-Din Khushqadam, (1413–1467), Burji Mamluk Sultan of Egypt
 * Sayf ad-Din Tatar, (died 1421), Burji Mamluk Sultan of Egypt
 * Sayf ad-Din Tuman bay I (died after 1501), Burji Mamluk Sultan of Egypt
 * Omar Ali Saifuddin I (died 1795), Sultan of Brunei
 * Omar Ali Saifuddin II (died 1852), Sultan of Brunei
 * Saifuddin Kitchlew (1888–1963), Muslim Indian lawyer and political activist
 * Taher Saifuddin (1888–1965), leader of the Dawoodi Bohras community
 * Seif el-Din el-Zoubi (1913–1986), Israeli-Arab politician
 * Omar Ali Saifuddien III (1914–1986), Sultan of Brunei
 * Saifuddin Azizi (1915–2003), Uyghur chairman of the people's council of Xinjiang, China
 * Mohammad Saifuddin (1996),Bangladeshi cricketer
 * Saifuddin Ahmed (1927–2010), Bangladeshi film actor
 * Saifuddin Soz (born 1937), Indian academic and politician
 * Mufaddal Saifuddin (born 1946)
 * Salih Saif Aldin (c. 1975–2007), Iraqi journalist
 * Khamis Abdullah Saifeldin (born 1976), Qatari runner
 * Saifeddine Nejmaoui (born 1981), Tunisian boxer
 * Saifuddin Nasution Ismail, Malaysian politician
 * Saifuddin Abdullah, Malaysian politician
 * Saifuddin Choudhury, Indian politician
 * Saifuddin or Saif Ahmad, American poker player
 * The Seif al Din pathogen in Patient Zero: A Joe Ledger Novel