Abu Said Uthman ibn Abd al-Haqq (Arabic: أبو سعيد عثمان بن عبد الحق) (1196 – 1240) was a leader of the Marinid Sultanate and son of Abd al-Haqq I.
After the death of his father in 1217, he became sheikh and during his reign fought for control of the western Maghreb against the Almohad Caliphate. In 1240 Uthman was killed by one of his Christian slaves.