| Official Name: | Thales, Indiana |
| Pushpin Map: | Indiana#USA |
| Pushpin Label: | Thales |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Dubois |
| Subdivision Type3: | Township |
| Subdivision Name3: | Harbison |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 38.5103°N -86.7986°W |
| Elevation Ft: | 692 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47527 |
| Area Code: | 812, 930 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 451555 |
Thales is an unincorporated community in Harbison Township, Dubois County, in the U.S. state of Indiana.
Thales was known as Hickory Grove until 1895.[1]
A post office was established under the name Hickory Grove in 1879, and was discontinued in 1887.[2] Another post office named Thales opened in 1895, and remained in operation until it was discontinued in 1909.[3]