Zahir al-Din Abu'l-Hasan Ali ibn Zayd-i Bayhaqi (Persian: ظهیرالدین ابوالحسن علی بن زید بیهقی; c. 1097 – 1169) also known as Ibn Fondoq (ابن فندق) was a polymath and historian.[1] He is the author of Tarikh-i Bayhaq.[2]