Gamay, officially the Municipality of Gamay, is a 4th class municipality in the province of Northern Samar, Philippines. According to the 2020 c…Gamay, officially the Municipality of Gamay, is a 4th class municipality in the province of Northern Samar, Philippines. According to the 2020 census, it has a population of 23,367 people. In the east, it is bounded by the Pacific Ocean, in the south by Lapinig, in the north-west by Mapanas and Catubig.