| Non-Normalizing Quantitative Electroencephalograph Software | Federal registry | 1 |
| olive oil | Company website | 1 |
| optical assemblies | Company website | 1 |
| Oral Wound Dressing | Federal registry | 1 |
| Orthosis, Cervical | Federal registry | 1 |
| Orthosis, Limb Brace | Federal registry | 1 |
| Orthosis, Lumbo-Sacral | Federal registry | 1 |
| Oximeter | Federal registry | 1 |
| Oximeter, Ear | Federal registry | 1 |
| Oximeter, Tissue Saturation | Federal registry | 1 |
| Pack, Hot Or Cold, Reusable | Federal registry | 1 |
| Passer | Federal registry | 1 |
| Patient Monitoring | Company website | 1 |
| Pinwheel | Federal registry | 1 |
| Plate, Cranioplasty, Preformed, Alterable | Federal registry | 1 |
| Plethysmograph, Impedance | Federal registry | 1 |
| Plier, Orthodontic | Federal registry | 1 |
| Pliers, Operative | Federal registry | 1 |
| Pliers, Surgical | Federal registry | 1 |
| Plinth | Federal registry | 1 |
| Post, Root Canal | Federal registry | 1 |
| products by size | Company website | 1 |
| Products, Red-Cell Lysing Products | Federal registry | 1 |
| Projector, Ophthalmic | Federal registry | 1 |
| Prosthesis, Ankle, Semi-Constrained, Cemented, Metal/Polymer | Federal registry | 1 |
| Prosthesis, Chin, Internal | Federal registry | 1 |
| Prosthesis, Hip, Cement Restrictor | Federal registry | 1 |
| Prosthesis, Hip, Hemi-, Femoral, Metal Ball | Federal registry | 1 |
| Prosthesis, Hip, Semi-Constrained (Metal Cemented Acetabular Component) | Federal registry | 1 |
| Prosthesis, Hip, Semi-Constrained, Metal/Ceramic/Ceramic/Metal, Cemented Or Uncemented | Federal registry | 1 |
| Prosthesis, Hip, Semi-Constrained (Metal Uncemented Acetabular Component) | Federal registry | 1 |
| Prosthesis, Knee, Patello/Femorotibial, Constrained, Cemented, Polymer/Metal/Polymer | Federal registry | 1 |
| Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer + Additive/Metal/Polymer + Additive | Federal registry | 1 |
| Prosthesis, Shoulder, Humeral (Bipolar Hemi-Shoulder) Metal/Polymer, Cemented Or Uncemented | Federal registry | 1 |
| Prosthesis, Shoulder, Non-Constrained, Metal/Polymer Cemented | Federal registry | 1 |
| Prosthesis, Wrist, Hemi-, Ulnar | Federal registry | 1 |
| Pump, Air, Non-Manual, For Endoscope | Federal registry | 1 |
| Pumps | Company website | 1 |
| Rasp | Federal registry | 1 |
| Reamer, Pulp Canal, Endodontic | Federal registry | 1 |
| Receivers | Company website | 1 |
| Reduced- Montage Standard Electroencephalograph | Federal registry | 1 |
| Refractometer, Ophthalmic | Federal registry | 1 |
| Refractor, Manual, Non-Powered, Including Phoropter | Federal registry | 1 |
| Regulator, Vacuum | Federal registry | 1 |
| Resin, Root Canal Filling | Federal registry | 1 |
| Retractor, Non-Self-Retaining | Federal registry | 1 |
| Retractor, Self-Retaining | Federal registry | 1 |
| Ring Cutter | Federal registry | 1 |
| Rongeur | Federal registry | 1 |
