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Al-Malik an-Nasir Nasir ad-Din Muhammad ibn Qalawun (Arabic: الملك الناصر ناصر الدين محمد بن قلاوون), commonly known as an-Nasir Muhammad (Arabic: الناصر محمد), or by his kunya: Abu al-Ma'ali (أبو المعالي) or as Ibn Qalawun (1285 – 1341) was the ninth Mamluk sultan of the Bahri dynasty who ruled Egypt between 1293–1294, 1299–1309, and 1310 until his death in 1341. During his first reign he was dominated by Kitbugha and al-Shuja‘i, while during his second reign he was dominated by Baibars and Salar. Not wanting to be dominated or deprived of his full rights as a sultan by his third reign, an-Nasir executed Baibars and accepted the resignation of Salar as vice Sultan.

An-Nasir was known to appoint non-Mamluks loyal to himself to senior military positions and remove capable officers of their duty whose loyalty he doubted. He however annulled taxes and surcharges that were imposed on commoners for the benefit of the emirs and officials. He employed Emir Ibn al-Waziri, a man who was known to be tough on corruption, as the head of the Court of Justice.