| Official Name: | Stary Sibay |
| Native Name: | Старый Сибай |
| Native Name Lang: | ru |
| Settlement Type: | Selo |
| Pushpin Map: | Russia Bashkortostan#Russia |
| Subdivision Type: | Country |
| Subdivision Name: | Russia |
| Subdivision Type1: | Region |
| Subdivision Name1: | Bashkortostan |
| Subdivision Type2: | County |
| Subdivision Type3: | District |
| Subdivision Name3: | Baymaksky District |
| Subdivision Type4: | Municipality |
| Utc Offset1: | +5:00 |
| Coordinates: | 52.45°N 100°W[1] |
Stary Sibay (Russian: links=no|Старый Сибай; Bashkir: Иҫке Сибай|Ecki Sibay) is a rural locality (a selo) and the administrative centre of Sibaysky Selsoviet, Baymaksky District, Bashkortostan, Russia. The population was 2,746 as of 2010.[2] There are 48 streets.
Stary Sibay is located 32 km northeast of Baymak (the district's administrative centre) by road. Zoloto is the nearest rural locality.[3]