Ras Osta is a municipality in the Byblos District of Keserwan-Jbeil Governorate, Lebanon. It is 55 kilometers north of Beirut. Ras Osta has an average elevation of 900 meters above sea level and a total land area of 429 hectares. There were two companies with more than five employees operating in the village as of 2008. Its inhabitants are predominantly Shia Muslims.