| Department | Name | Phone | Campus | |
|---|---|---|---|---|
| RADIATION SAFETY COMMITTEE | Brandon Jordan | 405-744-7890 | radsafe@okstate.edu | OSU Stillwater |
| Radiology | OSU Center for Health Sciences | |||
| READING & MATHEMATIC CENTER | Jenn Sanders | 405-744-7119 | OSU Stillwater | |
| REBOOT CENTER | 405-744-6434 | OSU Stillwater | ||
| RECORDS & REGISTRAR SERVICES | HANK LANKFORD | 405-945-3252 | OSU Oklahoma City | |
| RECRUITMENT | Everette Butler | 405-945-3279 | OSU Oklahoma City | |
| RED EARTH KITCHEN | 405-744-6116 | dining@okstate.edu | OSU Stillwater | |
| REGISTRAR | RITA PEASTER | 405-744-6876 | registrar@okstate.edu | OSU Stillwater |
| Registrar | Crystal Palacioz | 918-293-4682 | osuit.registrar@okstate.edu | OSU-Institute of Technology |