Lawaan, officially the Municipality of Lawaan, is a municipality in the province of Eastern Samar, Philippines. According to the 2020 censu…Lawaan, officially the Municipality of Lawaan, is a municipality in the province of Eastern Samar, Philippines. According to the 2020 census, it has a population of 13,003 people. It is home to Bolusao Watershed Forest Reserve, primarily located in Barangay Bolusao.