| Official Name: | Qayınsar |
| Native Name: | Каенсар |
| Native Name Lang: | tt |
| Settlement Type: | selo |
| Pushpin Map: | Russia Tatarstan |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Tatarstan |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Kukmara District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +3:00 |
Qayınsar (Tatar: Каенсар|Qayınsar) is a rural locality (a selo) in Kukmara District, Tatarstan. The population was 390 as of 2010.[1] Qayınsar, Kukmorsky District is located 17 km from Kukmаrа, district's administrative centre, and 147 km from Ԛazаn, republic's capital, by road.[2] [3] The earliest known record of the settlement dates from 1619.There are 9 streets in the village.[4]