| Official Name: | Arlington |
| Pushpin Map: | Indiana#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Rush |
| Subdivision Type3: | Township |
| Subdivision Name3: | Posey |
| Area Total Km2: | 3.84 |
| Area Land Km2: | 3.83 |
| Population As Of: | 2020 |
| Population Total: | 408 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 39.6425°N -85.5764°W |
| Elevation Ft: | 912 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46104 |
| Area Code: | 765 |
| Blank Name: | FIPS Code |
| Blank Info: | 18-02116 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2629872 |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Sq Mi: | 1.48 |
| Area Water Km2: | 0.01 |
| Area Land Sq Mi: | 1.48 |
| Area Water Sq Mi: | 0.01 |
| Population Density Sq Mi: | 276.05 |
| Population Density Km2: | 106.56 |
Arlington is an unincorporated community in Posey Township, in the northwestern part of Rush County, Indiana, United States. It lies just south of the B&O Railroad, on U.S. Route 52, 8 miles west of Rushville.
Arlington was originally called Burlington, and under the latter name was laid out in 1832.[2] The present name is after Arlington, Virginia.[3]
The Arlington post office has been in operation since 1875.[4]