| 1 | PMC | Primac Courier, Inc. | Callsign: Primac, | USA | AVCODES |
| 2 | PMC | Primas Courier | | | ICAO1 |
| 3 | PMC | Philippine Marine Corps | | RP | TRAFFIC |
| 4 | PMCA | PILCHER MACHINERY COMPANY | | | SCAC3 |
| 5 | PMCB | PIPER MOTOR COMPANY INC | | | SCAC3 |
| 6 | PMCB | P & M LOGISTICS INC | | | SCAC4 |
| 7 | PMCC | PRIME CONTRACT CARRIER INCORPORATED | | | SCAC3 |
| 8 | PMCC | PORTLINE TRANSPORTES MARITIMOS INTE | | | SCAC4 |
| 9 | PMCD | P M C DISTRIBUTORS INC | | | SCAC3 |
| 10 | PMCD | PRAIRIE MUD & CHEMICAL SERVICE LTD | | | SCAC4 |
| 11 | PMCF | PLUM CREEK FARMS | | | SCAC4 |
| 12 | PMCG | P & M CARTAGE INC | | | SCAC3 |
| 13 | PMCH | PAPER MARKET CORP | | | SCAC4 |
| 14 | PMCJ | PACIFIC MULTIMODAL CORP | | | SCAC4 |
| 15 | PMCK&Y | PITTSBURGH, MCKEESPORT & YOUGHIOGHENY | | | PWRC |
| 16 | PMCKY | Pittsburgh, McKeesport & Youghiogheny | Real: PMCK&Y | USA | TRAFFIC |
| 17 | PMCL | PENETANG-MIDLAND COACH LINES LIMITE | | | SCAC3 |
| 18 | PMCL | PLAINS MIDSTREAM CANADA ULC | | | SCAC4 |
| 19 | PMCM | PM CARRIER SERVICES | | | SCAC3 |
| 20 | PMCN | P M C INC | | | SCAC3 |
| 21 | PMCO | P M C INDUSTRIES | | | SCAC3 |
| 22 | PMCO | PRIME CONTRACT CARRIER INCORPORATED | | | SCAC4 |
| 23 | PMCP | P & M CEDAR PRODUCTS INC | | | SCAC3 |
| 24 | PMCQ | P M C DISTRIBUTION CORPORATION | | | SCAC4 |
| 25 | PMCR | POLYMER MACHINERY CORPORATION | | | SCAC3 |
| 26 | PMCR | PUMPCRETE | | | SCAC4 |
| 27 | PMCS | PALMER MOTOR COACH SERVICE INC | | | SCAC3 |
| 28 | PMCS | P & M CARRIERS | | | SCAC4 |
| 29 | PMCT | PMC TRANSPORTATION COMPANY INC | | | SCAC4 |
| 30 | PMCU | PACIFIC MEXICO CONTAINER LINES, INC | | | SCAC3 |
| 31 | PMCU | PACIFIC MEXICO CONTAINER LINES INC | | | SCAC4 |
| 32 | PMCV | PACIFIC MULTIMODAL CORP | | | SCAC4 |
| 33 | PMCW | PYXIS MARITIME CORP | | | SCAC4 |
| 34 | PMCX | Plateau Mining Co. | added 7/1979; 1/1980; eliminated 4/1987; 1/1994 (not listed) | | NAKINA |
| 35 | PMCX | Peterson Manufacturing Co., Inc. | 1/1950-10/1957; eliminated 10/1959 | | NAKINA |
| 36 | PMCX | Paper Makers Chemical Corp., Ltd. | 7/1937-4/1938 | | NAKINA |
| 37 | PMCX | Paper Makers Chemical Corp. | 7/1930-7/1935 | | NAKINA |
| 38 | PMCX | Western Paper Makers Chemical Co. | 8/1920-7/1923 | | NAKINA |
| 39 | PMCX | Paper Makers Chemical Corp., Ltd. | Apr-38 | | NRHS |
| 40 | PMCX | Peterson Manufacturing Co., Inc. | 1/52-10/57; eliminated 10/59 | | NRHS |
| 41 | PMCX | Plateau Mining Co. | added 7/79; 1/80; eliminated 4/87; 1/94 | | NRHS |
| 42 | PMCX | *PAPER MAKERS CHEMICAL CORP., LTD. [WESTERN PAPER MAKERS CHEMICAL CO.] | | | PWRC |
| 43 | PMCX | *PETERSON MANUFACTURING CO., INC. | | | PWRC |
| 44 | PMCX | *PLATEAU MINING COMPANY | | | PWRC |
| 45 | PMCY | PANORAMA MANAGEMENT COMPANY LTD | | | SCAC3 |
| 46 | PMCY | PRIMCO LTD | | | SCAC4 |
