| Official Name: | Deacon |
| Settlement Type: | Unincorporated community |
| Mapsize: | 120px |
| Pushpin Map: | USA Indiana Cass County |
| Pushpin Map Caption: | Location in Cass County |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Cass |
| Subdivision Type3: | Township |
| Subdivision Name3: | Deer Creek |
| Coordinates: | 40.6339°N -86.3172°W |
| Elevation Ft: | 755 |
| Postal Code Type: | ZIP code |
| Postal Code: | 46994 |
| Blank Name: | FIPS code |
| Blank Info: | 18-17038[1] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 433385 |
Deacon is an unincorporated community in Deer Creek Township, Cass County, Indiana.
A post office was established at Deacon in 1844, and remained in operation until it was discontinued in 1903.[2] The community was named for its first postmaster, William R. Deacon.[3]