Hacı Ali Paşa Mosque is a historical mosque located in the town of Armutlu in Yalova Province, Turkey. There is no confirmed information about the date of construction of the mosque, but some sources indicate that the original construction dates back to the 14th century AD during the reign of Orhan Ghazi, the second Ottoman sultan. The mosque was rebuilt in the 19th century, and many modifications have been made to it in the past years.