| Official Name: | Big Rock, Ohio |
| Settlement Type: | Unincorporated community |
| Mapsize: | 250px |
| Pushpin Map: | Ohio |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Ohio |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Jackson |
| Unit Pref: | Imperial |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Elevation Ft: | 679 |
| Coordinates: | 39.1017°N -82.7764°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 45640 |
| Area Code: | 740 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1049577 |
Big Rock is an unincorporated community in Liberty Township, Jackson County, Ohio, United States. It is located northwest of Jackson at the intersection of Big Rock Road and Big Run Road.[1]