| CNC Swiss Machining | Company website | 1 |
| CNC TURNING | Company website | 1 |
| CO2 Condensing Unit | Company website | 1 |
| Collections | Company website | 1 |
| Collector, Ostomy | Federal registry | 1 |
| Collector, Urine, Pediatric, For Indwelling Catheter | Federal registry | 1 |
| Collimator, Automatic, Radiographic | Federal registry | 1 |
| Collimator, Manual, Radiographic | Federal registry | 1 |
| Colorimetric Method, Cpk Or Isoenzymes | Federal registry | 1 |
| Colposcope (And Colpomicroscope) | Federal registry | 1 |
| Complex Assemblies | Company website | 1 |
| Component, Cast | Federal registry | 1 |
| Components, Wheelchair | Federal registry | 1 |
| Component, Traction, Non-Invasive | Federal registry | 1 |
| Compression Springs | Company website | 1 |
| Computer, Diagnostic, Pre-Programmed, Single-Function | Federal registry | 1 |
| Computer, Diagnostic, Programmable | Federal registry | 1 |
| concrete anchors | Company website | 1 |
| Condenser, Heat And Moisture (Artificial Nose) | Federal registry | 1 |
| cones | Company website | 1 |
| Connector, Catheter | Federal registry | 1 |
| Container, Embedding | Federal registry | 1 |
| Container, Specimen Mailer And Storage, Sterile | Federal registry | 1 |
| Container, Specimen, Urine, Drugs Of Abuse, Over The Counter | Federal registry | 1 |
| Contractor, Surgical | Federal registry | 1 |
| controller | Company website | 1 |
| Control products | Company website | 1 |
| conveyor belting | Company website | 1 |
| Counter, Cell, Automated (Particle Counter) | Federal registry | 1 |
| Counter, Differential Cell | Federal registry | 1 |
| Countersink | Federal registry | 1 |
| Counter, Sponge, Surgical | Federal registry | 1 |
| Counter, Urine Particle | Federal registry | 1 |
| Couplings | Company website | 1 |
| Cover, Barrier, Protective | Federal registry | 1 |
| Cover, Cast | Federal registry | 1 |
| Cover, Limb | Federal registry | 1 |
| Cover, Mattress (Medical Purposes) | Federal registry | 1 |
| Cover, Shoe, Operating-Room | Federal registry | 1 |
| Covid-19 Multi-Analyte Antigen Device | Federal registry | 1 |
| Crutch | Federal registry | 1 |
| Cuff, Tracheal Tube, Inflatable | Federal registry | 1 |
| Culdoscope (And Accessories) | Federal registry | 1 |
| Culture Media, Non-Propagating Transport | Federal registry | 1 |
| Curette, Adenoid | Federal registry | 1 |
| Curette, Endodontic | Federal registry | 1 |
| Curette, Operative | Federal registry | 1 |
| Curette, Suction, Endometrial (And Accessories) | Federal registry | 1 |
| Cushion, Flotation | Federal registry | 1 |
| Custom Design | Company website | 1 |
