| Official Name: | Ritter, Iowa |
| Pushpin Map: | Iowa |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Iowa |
| Subdivision Type2: | County |
| Subdivision Name2: | O'Brien |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation Ft: | 1427 |
| Coordinates: | 43.2442°N -95.8228°W |
| Area Code: | 712 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 464720 |
Ritter is an unincorporated community in O'Brien County, Iowa, United States.
Ritter was platted when the Chicago, Minneapolis & St. Paul Railroad was extended to that point.[1] The community was named for J. L. Ritter, a railroad dispatcher.[2]