Ubay is a first income class municipality in the island province of Bohol, Philippines. Ubay is in the northeast of the province, and has an area of 335.06 square kilometres (129.37 sq mi), and 61 kilometres (38 mi) of coastline. According to the 2010 census, it has a population of 68,578, making Ubay the largest and most populated municipality in Bohol.