| Official Name: | Elwren, Indiana |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Elwren |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Monroe |
| Subdivision Type3: | Township |
| Subdivision Name3: | Van Buren |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 39.1086°N -86.6697°W |
| Elevation Ft: | 833 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47403 |
| Area Code: | 812, 930 |
| Blank Name: | FIPS code |
| Blank Info: | 18-21088[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 434146 |
Elwren is an unincorporated community in Van Buren Township, Monroe County, in the U.S. state of Indiana.
Founded in 1906,[2] Elwren had its start when the railroad was extended to that point.[3] The name is a portmanteau of the names of founding families Eller, Whaley, Baker, and Breedon.[4] A post office was established at Elwren in 1910, and remained in operation until it was discontinued in 1934.[5]