| Official Name: | Ayn al-Niser |
| Native Name: | عين النسر |
| Settlement Type: | Village |
| Pushpin Map: | Syria |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in Syria |
| Subdivision Type: | Country |
| Subdivision Type1: | Governorate |
| Subdivision Name1: | Homs |
| Subdivision Type2: | District |
| Subdivision Name2: | Homs |
| Subdivision Type3: | Subdistrict |
| Subdivision Name3: | Ayn al-Niser |
| Population As Of: | 2004 |
| Population Total: | 604 |
| Population Blank1 Title: | Ethnicities |
| Elevation M: | 472 |
| Timezone: | EET |
| Utc Offset: | +3 |
| Timezone Dst: | EEST |
| Utc Offset Dst: | +2 |
| Coordinates: | 34.8414°N 36.9281°W |
Ayn al-Niser (Arabic: عين النسر, also spelled Ain al-Nisr or Ayni-Nasir) is a town in central Syria, administratively part of the Homs Governorate, located northeast of Homs. Nearby localities include al-Mishirfeh to the west, Ayn al-Dananir to the northwest, Izz al-Din to the north, al-Mukharram al-Fawqani to the east and Umm al-Amad to the southeast.
According to the Central Bureau of Statistics (CBS), Ayn al-Niser had a population of 604 in the 2004 census. It is the administrative center and 11th largest locality of the Ayn al-Niser nahiyah ("subdistrict") which consists of 16 localities with a collective population of 30,267.[1] The inhabitants of the village are ethnic Circassians from the Shapsugh, Kabardian and Bzhedug tribes.[2]