Sayyid ʿAbdullāh bin Shaykh al-ʿAydarūs (Arabic: عبد الله بن شيج العيدروس, died 1609) was a Hadhrami religious leader who lived in the 16th century^[1] and a descendant of Abu Bakr al-ʿAydarūs, a prominent saint who started the al-ʿAydarūs branch of the Bā ʿAlawiyyah clan.^{[2][3][4][5][6]}

Abdullah was among the earliest Hadhrami Arab settlers in Aceh, and, like many of his kinsmen who came after, he served as the Naqib "religious leader" of Aceh.^[7][8] Sultan Alauddin Mansur Syah of the Aceh Sultanate (reigned 1577–1585) persuaded ʿAbdullah to marry his daughter, and his son Zayn al-ʿAbidin was born out of this union.^[9][10] In his later years, he led his life in a local village, Kampung Pasir Putih, where he died of old age.^[11]

ʿAbdullāh's son Zayn al-ʿAbidin also became a religious leader and migrated to Johor, where he married Tun Kaishi, the daughter of Tun Jenal, the Bendahara of Sekudai^[12] and took up the Malay name of "Tun Dagang" while staying with the Bendahara's family.^[13]

• Ali al-Uraidhi ibn Ja'far al-Sadiq