| Official Name: | Rock Branch, Iowa |
| Pushpin Map: | Iowa |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | Woodbury |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1430 |
| Coordinates: | 42.475°N -95.9181°W |
| Area Code: | 712 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 466265 |
Rock Branch is an unincorporated community in Woodbury County, Iowa, United States.
A post office was established at Rock Branch in 1872, and remained in operation until 1904.[1] The community took its name from Rock Creek.[2] Little remains of the original community.