| 0113 | Prunes, growing | |
| 0140 | Pruning and tree surgery service | |
| 0140 | Pruning of orchard trees and vines | |
| 0140 | Pruning service, orchard | |
| 2411 | Prussian blue pigments, manufacturing | |
| 2893 | Pry bars, manufacturing | |
| 1320 | Psilomelane mining | |
| 8519 | Psychiatric clinics | |
| 8511 | Psychiatric hospitals | |
| 8519 | Psychiatric patient's convalescent homes | |
| 8519 | Psychiatric social workers, offices of | |
| 8512 | Psychiatrists' offices | |
| 9309 | Psychic services | |
| 8512 | Psychoanalysts' offices | |
| 8532 | Psychological and moral support for cancer patients | |
| 8519 | Psychologists (except M.D.), industrial | |
| 9112 | Psychologists' associations | |
| 8519 | Psychologists' offices | |
| 8519 | Psychologists, clinical, offices of | |
| 7320 | Psychology research and development services | |
| 8519 | Psychotherapists (except M.D.), offices of | |
| 5520 | Pub, university, run by athletic society | |
| 7412 | Public accountants, certified, private practice | |
| 7412 | Public accountants, offices of | |
| 5150 | Public address equipment, wholesale | |
| 7129 | Public address system rental | |
| 3220 | Public address system repair | |
| 3230 | Public address systems and equipment, manufacturing | |
| 4530 | Public address systems, installation | |
| 5150 | Public address systems, wholesale | |
| 9231 | Public archives (government owned) | |
| 9213 | Public broadcasting television | |
| 4520 | Public buildings, construction, general contractors | |
| 7511 | Public debt management, federal administration | |
| 7523 | Public defenders' offices | |
| 7512 | Public health agencies, non-operating | |
| 8532 | Public health associations | |
| 8512 | Public health clinics | |
| 7512 | Public health service programs, provincial government | |
| 8512 | Public health unit | |