| Official Name: | Baissour |
| Other Name: | Bayssour |
| Native Name: | بيصور |
| Pushpin Map: | Lebanon |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 300 |
| Pushpin Map Caption: | Location in Lebanon |
| Subdivision Type: | Country |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Mount Lebanon Governorate |
| Subdivision Type2: | District |
| Subdivision Name2: | Aley District |
| Unit Pref: | Imperial |
| Area Total Km2: | 6.29 |
| Population Blank1 Title: | Ethnicities |
| Population Blank2 Title: | Religions |
| Timezone: | EST |
| Utc Offset: | +2 |
| Timezone Dst: | +3 |
| Coordinates: | 33.7653°N 35.5675°W |
| Elevation Footnotes: | [1] |
| Elevation M: | 750 |
Baissour or Bayssour, (Arabic: بيصور) is a village located in the Aley District of Mount Lebanon. It is 850m (2,790feet) above sea level[1] and shares a border with Aley, Kaifoun, Kabr Shmoon, Majdlaya, and Ainab.
Baissour River (Naher Baissour, نهر بيصور) is home to many restaurants and resorts. Thousands of tourists visit Baissour every year, and along with the restaurants along the river, one of the biggest attractions is the Radar area. This beautiful, mountainous, tree covered picnic and recreational area is located at the highest point of Baissour and is accessible year round.
In 1838, Eli Smith noted the place, called Beisur, located in Aklim es-Sahhar, between el-Ghurb and el-Jurd.[2]