O
| Site name | Organisation |
| Oak Farm Friends Association (OFFA) | Oak Farm Friends Association (OFFA) |
| Old Bell Darts Team | Old Bell Darts Team |
| Old Oswestry Landscape and Archaeology Project | Old Oswestry Landscape and Archaeology Project |
| Open Door Shropshire | Open Door Shropshire |
| Orthopaedic Male Voice Choir | Orthopaedic Male Voice Choir |
| Oswestry Memorial Hall | Oswestry Memorial Hall |
| Oswestry Rural | Oswestry Rural Parish Council |
| Oswestry Sports Council | Oswestry & District Sports Council |