| Official Name: | Sedan |
| Pushpin Map: | Indiana#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | DeKalb |
| Subdivision Type3: | Township |
| Subdivision Name3: | Richland |
| Coordinates: | 41.4364°N -85.0994°W |
| Elevation Footnotes: | [1] |
| Elevation Ft: | 932 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46730 |
| Blank Name: | FIPS code |
| Blank Info: | 18-68616[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 443193 |
Sedan is an unincorporated community in Richland Township, DeKalb County, Indiana.
Originally named Lawrence, the town's post office was first established in 1854 and referred to as Iba (or Ida).[3] Renamed Sedan P.O. in 1861, the post office was subsequently discontinued in 1908.[4] The community was likely named after Sedan, in France.
Sedan is located at 41.4364°N -85.0994°W.
Sedan appeared as a separately-returned community in the 1870 Census, when it was reported to have a population of 176.