| Official Name: | Springfield |
| Pushpin Map: | Indiana#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Posey |
| Subdivision Type3: | Township |
| Subdivision Name3: | Lynn |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Coordinates: | 38.0425°N -87.8703°W |
| Elevation Ft: | 440 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47631 |
| Area Code: | 812, 930 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 444010 |
Springfield is an unincorporated community in Lynn Township, Posey County, in the U.S. state of Indiana.
Springfield was platted in 1817.[1] The community served from its beginning until 1825 as the county seat, but when the seat was transferred to Mount Vernon in 1825, business activity shifted elsewhere, and the town's population dwindled.[2] A post office was established at Springfield in 1818, and remained in operation until 1828.[3]