Frankfort
- Country: United States
- State: Indiana
- Population: 15,951 (2016)
- Latitude: 40° 16.8' N (40.27948°)
- Longitude: 86° 30.7' W (-86.51084°)
- Elevation: 260 m/852 ft. above sea level
- Time zone: America/Indiana/Indianapolis (UTC -05:00); DST observed (UTC -04:00)