Lazi, officially the Municipality of Lazi, is a 4th class municipality in the province of Siquijor, Philippines. According to the 2020 census, it ha…Lazi, officially the Municipality of Lazi, is a 4th class municipality in the province of Siquijor, Philippines. According to the 2020 census, it has a population of 22,488. Lazi Church is currently in the tentative list for UNESCO World Heritage Sites under the Baroque Churches of the Philippines. A proposal has been suggested by scholars to make a separate UNESCO inclusion for "Old Centre of Lazi which includes the Lazi Church".