Al-Sa'id Najm al-Din Ghazi I

Al-Sa'id Najm al-Din Ghazi I was an Artuqid ruler of Mardin (r. 1239–1260), and a son of Yuluq Arslan (r.1184–1203). He succeeded his brother Artuk Arslan (r. 1203–1239).

After the Siege of Mayyafariqin, the Mongol commander Yoshmut was sent to capture Mardin, ruled by Al-Sa'id Najm al-Din Ghazi I. Mardin resisted the siege for over 8 months until the death of Najm al-Din. The new Artuqid bey, his son Qara Arslan (r.1260–1292), surrendered the Mardin castle to Yoshmut in 1260 and accepted Ilkhanate overlordship, submitting to Hulegu.