| Official Name: | Blue River, Indiana |
| Mapsize: | 120px |
| Pushpin Map: | USA Indiana Washington County |
| Pushpin Label: | Blue River |
| Pushpin Map Caption: | Location of Blue River in Washington County |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Washington |
| Subdivision Type3: | Township |
| Subdivision Name3: | Polk |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 38.53°N -85.9394°W |
| Elevation Ft: | 758 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47165 |
| Area Codes: | 812, 930 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 431237 |
Blue River is an unincorporated community in Polk Township, Washington County, in the U.S. state of Indiana.
A post office was established at Blue River in 1873, and remained in operation until it was discontinued in 1904.[1]
Blue River is located at 38.53°N -85.9394°W.