| Official Name: | Hillisburg |
| Settlement Type: | Unincorporated community and Census-designated place |
| Pushpin Map: | USA Indiana Clinton County |
| Coordinates: | 40.2861°N -86.3397°W |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Clinton |
| Subdivision Type3: | Township |
| Subdivision Name3: | Johnson |
| Named For: | John E. Hillis |
| Elevation Ft: | 919 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46041 |
| Blank Name: | FIPS code |
| Blank Info: | 18-33826[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830343 |
Hillisburg is an unincorporated community in Johnson Township, Clinton County, Indiana.
Hillisburg was laid out in 1874 by John Etherton Hillis (1840-1904), a local businessman and financier, and by 1886 had two general stores, two drug stores, a blacksmith shop, a saw mill, a grist mill and a grain elevator. In the early 1900s it was also home to the Hillisburg Bank, two churches (Christian and Methodist Episcopalian) and Masonic Lodge #550.[2]
The Hillisburg post office was discontinued in 1992.[3]