Sheikh Nasr Al-Madhkur (Arabic: الشيخ نصر آل مذكور‎) was the 18th-century Arab governor from a Huwala clan under Karim Khan Zand of the Zand dynasty of what was described by a contemporary account as an "independent state" in Bushehr and Bahrain. The account by German geographer Carsten Niebuhr who visited the region at the time describes Sheikh Nasr as "the sole Monarch of the Isle of Bahrain”. He lost Bahrain in 1783 after his defeat by the Bani Utbah tribal alliance at Zubarah in 1782.