Jeffersontown
- Country: United States
- State: Kentucky
- Population: 27,352 (2016)
- Latitude: 38° 11.7' N (38.19424°)
- Longitude: 85° 33.9' W (-85.5644°)
- Elevation: 213 m/700 ft. above sea level
- Time zone: America/Kentucky/Louisville (UTC -05:00); DST observed (UTC -04:00)
- Alternate names: Bruners Town, Brunerstown, Jefferson, Jefferson Town