| Official Name: | Montclair, Indiana |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Montclair |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Hendricks |
| Subdivision Type3: | Township |
| Subdivision Name3: | Union |
| Coordinates: | 39.8481°N -86.5669°W |
| Elevation Ft: | 961 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46165 |
| Blank Name: | FIPS code |
| Blank Info: | 18-50598[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 439352 |
Montclair is an unincorporated community in Union Township, Hendricks County, Indiana.
A post office was established at Montclair in 1880, and remained in operation until it was discontinued in 1929.[2]
Montclair is located at 39.8481°N -86.5669°W.