| Bluff City, Illinois | |
| Settlement Type: | Unincorporated community |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Illinois |
| Subdivision Type2: | County |
| Subdivision Name2: | Fayette |
| Subdivision Type3: | Township |
| Subdivision Name3: | Vandalia |
| Pushpin Map: | Illinois#USA |
| Pushpin Map Caption: | Location of Bluff City within Illinois |
| Coordinates: | 38.9639°N -89.0464°W |
| Established Title: | Founded |
| Elevation Ft: | 515 |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone1: | CST |
| Utc Offset1: | -6 |
| Timezone1 Dst: | CDT |
| Utc Offset1 Dst: | -5 |
| Postal Code Type: | ZIP code |
| Postal Code: | 62471 |
| Area Code: | 618 |
Bluff City is an unincorporated community in Fayette County, Illinois, United States. This community is located two miles east of Vandalia on the historic road of U.S. Route 40.
The area around this community was said to have one of the largest pre-Columbian Native American settlements. In 1949, Bluff Equipment Inc., a Case IH, Kubota, and Arctic Cat dealership, was founded, and is still located there. In addition, it is rumored that debris from the Chicago Fire of 1871 was dumped near Bluff City. Bluff City was also the home of the Okaw Valley Opry, operated by Bill and Eveyln Oliver for many years.