The Tomb of İsa Sofi (Turkish: İsa sofu türbesi) is an early 14th century tomb located in Borcak, Söğüt in the district of Bilecik, Turkey.

[2][3][4] The tomb was dedicated to İsa Sofi, a friend of Ertuğrul, father of Osman Gazi (Osman I), founder of the dynasty that ruled the Ottoman Empire.

[2] İsa Sofi had a lodge in the area at the time of Osman I.

[4] It is similar architecturally to the tombs of Gülruh Sultan and Gülşah Hatun in Bursa.

[2] The decorations, which are in good condition, were discovered during the tomb's renovation, revealed when plaster was scraped away.