| Official Name: | Cross Plains, Indiana |
| Settlement Type: | Unincorporated community and Census-designated place |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Cross Plains |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Ripley |
| Subdivision Type3: | Township |
| Subdivision Name3: | Brown |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 38.9439°N -85.2047°W |
| Elevation Ft: | 961 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47017 |
| Area Code: | 812, 930 |
| Blank Name: | FIPS code |
| Blank Info: | 18-16030[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830511 |
Cross Plains is an unincorporated community in Brown Township, Ripley County, in the U.S. state of Indiana.
Cross Plains was founded in 1826 and was named for the fact two roads meet at the town site.[2] A post office has been in operation at Cross Plains since 1826.[3]