| Official Name: | Shmustar |
| Native Name: | شمسطار |
| Shmustar | |
| Pushpin Map: | Lebanon |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location in Lebanon |
| Subdivision Type: | Country |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Baalbek-Hermel |
| Subdivision Type2: | District |
| Subdivision Name2: | Baalbek |
| Leader Name: | Souhayl Hajj Hassan |
| Leader Name1: | Souhayl Hajj Hassan |
| Area Total Km2: | 18 |
| Population As Of: | 2012 |
| Population Total: | 30000 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EST |
| Utc Offset: | +2 |
| Timezone Dst: | +3 |
| Coordinates: | 33.9667°N 37°W |
| Elevation M: | 1250 |
| Elevation Ft: | 4101 |
| Area Code: | 9618 |
Shmustar, also spelled Shmistar or Chmistar (Arabic: شمسطار) is a Lebanese town located in Baalbek-Hermel Governorate, Lebanon between Baalbeck and Zahleh, on the eastern slope of Mount Sannine. It overlooks the Bekaa Valley from an altitude of 1250m (4,100feet) above sea level. The town is from Beirut and from Baalbek. Chmistar has a population of 30,000 according to a 2012 census.
Shmustar's population is dominated by Shia and Sunni Muslims.[1]