Towns
| State | City/Town | Town Title |
|---|---|---|
| Ohio | Ray | Ray, OH |
| Ohio | Rayland | Rayland, OH |
| Ohio | Raymond | Raymond, OH |
| Ohio | Reedsville | Reedsville, OH |
| Ohio | Reesville | Reesville, OH |
| Ohio | Reno | Reno, OH |
| Ohio | Republic | Republic, OH |
| Ohio | Reynoldsburg | Reynoldsburg, OH |
| Ohio | Richfield | Richfield, OH |
| Ohio | Richmond | Richmond, OH |
| Ohio | Richmond Dale | Richmond Dale, OH |
| Ohio | Richwood | Richwood, OH |
| Ohio | Ridgeville Corners | Ridgeville Corners, OH |
| Ohio | Ridgeway | Ridgeway, OH |
| Ohio | Rio Grande | Rio Grande, OH |
| Ohio | Ripley | Ripley, OH |
| Ohio | Risingsun | Risingsun, OH |
| Ohio | Rittman | Rittman, OH |
| Ohio | Robertsville | Robertsville, OH |
| Ohio | Rock Camp | Rock Camp, OH |
| Ohio | Rock Creek | Rock Creek, OH |
| Ohio | Rockbridge | Rockbridge, OH |
| Ohio | Rockford | Rockford, OH |
| Ohio | Rocky Ridge | Rocky Ridge, OH |
| Ohio | Rocky River | Rocky River, OH |