| Type: | municipality |
| Province: | Bilecik |
| District: | Bilecik |
| Bayırköy | |
| Population Total: | 1793 |
| Population As Of: | 2021 |
| Coordinates: | 40.3167°N 31°W |
| Elevation M: | 140 |
| Postal Code: | 11120 |
| Area Code: | 0228 |
Bayırköy is a town (belde) and municipality in the Bilecik District, Bilecik Province, Turkey.[1] Its population is 1,793 (2021).[2] It is about north of Bilecik. Bayırköy consists of the quarters Fatih, Gazi and Sarmaşık.[3]
The town has been relocated in 1948 to its present location after a landslide in its former location slightly at the west. The economy of the town depends on vegetable farming and sericulture. There are also some factories around the town.[4]