| Official Name: | Locust Grove, Ohio |
| Pushpin Map: | Ohio#USA |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | County |
| Subdivision Name2: | Adams |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 784 |
| Coordinates: | 38.9883°N -83.3781°W |
| Area Code: | 937 and 326 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1057814 |
Locust Grove is an unincorporated community in Adams County, Ohio, United States. Locust Grove is located at the junction of Ohio State Route 41 and Ohio State Route 73 3.1miles north-northeast of Peebles.
Locust Grove was laid out in 1835.[1] The community was named for a grove of locust trees near the original town site. A post office was established at Locust Grove in 1833, and remained in operation until 1920.[2]