| Ras Osta | |
| Native Name: | راس اسطا |
| Native Name Lang: | ar |
| Pushpin Map: | Lebanon |
| Pushpin Map Caption: | Location in Lebanon |
| Coordinates: | 34.115°N 35.7233°W |
| Subdivision Type: | Country |
| Subdivision Name: | Lebanon |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Keserwan-Jbeil |
| Subdivision Type2: | District |
| Subdivision Name2: | Byblos |
| Unit Pref: | Metric |
| Area Total Km2: | 4.29 |
| Elevation M: | 900 |
Ras Osta (ar|راس اسطا, also spelled Ras Usta) 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.[1] Its inhabitants are predominantly Shia Muslims.[2]