| C- | CA | CB | CD | CE | CH | CI | CL | CM | CO | CP | CR | CT | CU | CY |
| Index entry | NAICS Code | U.S. NAICS Title |
|---|---|---|
| CPAs' (certified public accountants) offices | 541211 | Offices of Certified Public Accountants |
| CPR (cardiac pulmonary resusitation) training and certification | 611699 | All Other Miscellaneous Schools and Instruction |
| C- | CA | CB | CD | CE | CH | CI | CL | CM | CO | CP | CR | CT | CU | CY |