| Koynanagar | |
| Settlement Type: | Town |
| Pushpin Map: | India Maharashtra |
| Pushpin Label Position: | right |
| Pushpin Map Caption: | Location in Maharashtra, India |
| Coordinates: | 17.4°N 73.76°W |
| Subdivision Type: | Country |
| Subdivision Name: |  India |
| Subdivision Type1: | State |
| Subdivision Name1: | Maharashtra |
| Subdivision Type2: | District |
| Subdivision Name2: | Satara |
| Unit Pref: | Metric |
| Elevation M: | 746 |
| Population Total: | 28091 |
| Population As Of: | 2001 |
| Population Density Km2: | auto |
| Demographics Type1: | Languages |
| Demographics1 Title1: | Official |
| Demographics1 Info1: | Marathi |
| Timezone1: | IST |
| Utc Offset1: | +5:30 |
| Postal Code Type: | PIN |
| Postal Code: | 415207 |
| Area Code Type: | Telephone code |
| Area Code: | 02372 |
| Registration Plate: | MH-50 |
Koynanagar is a town in Maharashtra, India. It is situated on the Chiplun-Sangli state highway on the banks of Koyna River. The town is small but famous for Koyna Dam and the Koyna Hydroelectric Project which is the largest completed hydroelectric project of India.[1] An earthquake in 1967 flattened the city.
Koyna Nagar is nestled in the Western Ghats, about 7460NaN0 above sea level, and hence has a tolerable climate for most of the year.