Ras Osta (Arabic: راس اسطا, also spelled Ras Usta) is a municipality in the Byblos District of Keserwan-Jbeil Governorate, Lebanon.

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.

[1] Its inhabitants are predominantly Shia Muslims.

[2] This Lebanon location article is a stub.