| 1 | PN | Pan American Airways Corp. | ICAO: PAA, Callsign: Clipper, | USA | AVCODES |
| 2 | PN | Société Nouvelle Air Martinique | ICAO: MTQ, Callsign: Air Martinique, | MQ | AVCODES |
| 3 | PN | Ansett Airlines of Papua New Guinea | | AUS | AVCODES |
| 4 | PN | Maldives Airways Ltd. | Callsign: Maldivesair, IATA designator changed from MQ | MV | AVCODES |
| 5 | PN | China West Air Ltd. | ICAO: CHB, Callsign: West China, IATA Prefix: 847, Designator PN instated by IATA | PRC | AVCODES |
| 6 | PN | Seaboard Coast Line R.R. Co. | 1/1975-1/1980 | | NAKINA |
| 7 | PN | Seaboard Coast Line R.R. Co. | 1/75-1/80 | | NRHS |
| 8 | PN | CSX TRANSPORTATION [SEABOARD COAST LINE; PIEDMONT & NORTHERN RWY.] | | | PWRC |
| 9 | PN | Pennsylvania Northeastern Railroad | | | RSRV |
| 10 | PN | Piedmont and Northern Railway (CSX Transportation) | | | RSRV |
| 11 | PN | Pacific National | | AUS | TRAFFIC |
| 12 | PNA | Universal Airlines, Inc. | Callsign: Pacific Northern, | USA | AVCODES |
| 13 | PNA | Palau National Airlines | IATA: 9P, Callsign: Sebus, IATA designator changed to 4L. ICAO Callsign changed to Tropic Bird | PAL | AVCODES |
| 14 | PNA | Palau National Airlines | IATA: 4L, Callsign: Tropic Bird, IATA designator changed from 9P. ICAO Callsign changed from Sebus. | PAL | AVCODES |
| 15 | PNA | Universal Airlines | | | ICAO1 |
| 16 | PNAA | PANAMERICA TRAILER TRANSPORT INC, O | | | SCAC3 |
| 17 | PNAE | PRINCETON AIRPORTER INC | | | SCAC3 |
| 18 | PNAF | PANLPINA FORWARDING LTD ZURICH | | | SCAC3 |
| 19 | PNAF | PREMIER CLASS TRANSPORT INC | | | SCAC4 |
| 20 | PNAH | P & A FREIGHT HAULERS INC | | | SCAC4 |
| 21 | PNAI | PAN AMERICAN INDEPENDENT LINE | | | SCAC3 |
| 22 | PNAI | PATTEN ACRES INC | | | SCAC4 |
| 23 | PNAJ | POELMAN APIARIES LTD | | | SCAC4 |
| 24 | PNAK | PRIVA NORTH AMERICA INC | | | SCAC4 |
| 25 | PNAL | PINA ARELLANO, LUIS ALFREDO | | | SCAC4 |
| 26 | PNAM | PAN-AM TRUCKING INC | | | SCAC3 |
| 27 | PNAN | PAN ATLANTIC SHIPPING | | | SCAC3 |
| 28 | PNAN | PRECISION HEAVY HAUL INC | | | SCAC4 |
| 29 | PNAO | PICKWORTH & ASSOCIATES | | | SCAC3 |
| 30 | PNAP | PINE ACRES TRANSPORTATION | | | SCAC3 |
| 31 | PNAP | PINE ACRES TRANSPORTATION | | | SCAC4 |
| 32 | PNAQ | PAN AMERICAN EXPRESS | | | SCAC3 |
| 33 | PNAR | PRONTO AIRE INC | | | SCAC3 |
| 34 | PNAT | PAN ATLANTIC LINES | | | PWRC |
| 35 | PNAT | P & A TRANSPORTATION INC | | | SCAC3 |
| 36 | PNAU | SPECTRA CHEMICALS AND COMMODITIES (SHANGHAI) | | PRC | BIC |
| 37 | PNAU | SPECTRA CHEMICALS AND COMMODITIES ( | | | SCAC4 |
| 38 | PNAX | POLIMEROS NACIONALES SA DE CV | | | PWRC |
| 39 | PNAX | POLIMEROS NACIONALES SA DE CV | | | SCAC4 |
| 40 | PNBC | P & B TRUCKING COMPANY | | | SCAC3 |
| 41 | PNBE | PEN BULLET EXPRESS INC | | | SCAC3 |
| 42 | PNBG | PEPSI NORTHWEST BEVERAGES LLC | | | SCAC4 |
| 43 | PNBK | PORK & BULL TRUCKING | | | SCAC3 |
| 44 | PNBL | PONTCHARTRAIN BLUE CRAB INC | | | SCAC4 |
| 45 | PNBS | PNB TRANSPORTATION SYSTEMS INC | | | SCAC3 |
| 46 | PNBS | PARK TRANSPORTATION INC | | | SCAC4 |
| 47 | PNBT | P & B TRANSFER & STORAGE CO INC | | | SCAC3 |
| 48 | PNBT | PINNACLE TRANSPORT INC | | | SCAC4 |
| 49 | PNBU | JORN BOLDING A/S | | DK | BIC |
| 50 | PNC | Pan-Air, S.A. de C.V. | Callsign: Panairsa, | MEX | AVCODES |
| 51 | PNC | Prince Aviation | Callsign: Prince Aviation, | SR | AVCODES |
| 52 | PNC | Pan-Air | | | ICAO1 |
| 53 | PNC | Piedmont & Northern Railway | Real: PN | USA | TRAFFIC |
| 54 | PNCA | P & C AIR FREIGHT & TRUCKING CO | | | SCAC3 |
| 55 | PNCA | PNC TRANSPORT | | | SCAC4 |
| 56 | PNCB | PENNCO TRANSPORT INC | | | SCAC4 |
| 57 | PNCC | PANAMANIAN CARRIERS CORP | | | SCAC3 |
| 58 | PNCD | PATRONS COOPERATIVE ASSOC | | | SCAC4 |
| 59 | PNCE | PRINCE MOVERS | | | SCAC4 |
| 60 | PNCF | PRINCECRAFT BOATS | | | SCAC4 |
| 61 | PNCG | PINNACLE LOGISTICS INC | | | SCAC4 |
| 62 | PNCH | PANORAMA COACHES OF COLORADO INC | | | SCAC3 |
| 63 | PNCI | PACIFIC NORTHWEST CONTAINER SERVICE | | | SCAC3 |
| 64 | PNCL | PINNACLE EXPRESS INC | | | SCAC4 |
| 65 | PNCO | PRINCE & COMPANY | | | SCAC3 |
| 66 | PNCP | PERINTER CORPORATION | | | SCAC3 |
| 67 | PNCQ | P C TRUCKING INC | | | SCAC3 |
| 68 | PNCQ | PROFESSIONAL COURIER INC | | | SCAC4 |
| 69 | PNCR | PRONTO COURIER INC | | | SCAC3 |
| 70 | PNCS | PENN-CAL SHIPPERS INC | | | SCAC3 |
| 71 | PNCS | PT NUSA CAKRAWALA SEJATI | | | SCAC4 |
| 72 | PNCT | P & C TRUCKING INC | | | SCAC3 |
| 73 | PNCT | PINNACLE TRANSPORT LTD | | | SCAC4 |
| 74 | PNCU | PACIFIC ENVIRONMENTAL CORP. | | USA | BIC |
| 75 | PNCU | Pacific Environmental | | | RSRV |
| 76 | PNCU | PACIFIC ENVIROMENTAL CORP | | | SCAC4 |
| 77 | PNCV | PRECISION CAMERA CARS LTD | | | SCAC4 |
| 78 | PNCX | PRECISION NATIONAL CORPORATION | | | PWRC |
| 79 | PNCX | PRECISION NATIONAL CORPORATION | | | SCAC4 |
| 80 | PNCX | Precision National Corporation | | USA | TRAFFIC |
| 81 | PNCY | PRINCE OIL COMPANY INC | | | SCAC4 |
| 82 | PNCZ | FLEXI-VAN LEASING INC | | | SCAC4 |
| 83 | PND | Pond Air Express, Inc. | Callsign: Pond Air, | USA | AVCODES |
| 84 | PND | Pond Air Express | | | ICAO1 |
| 85 | PNDA | PANDA TRADING INC | | | SCAC3 |
| 86 | PNDB | PENN DISTRIBUTORS INC | | | SCAC3 |
| 87 | PNDC | PERRY, ND LLC | | | SCAC4 |
| 88 | PNDE | PANDA EXPRESS | | | SCAC3 |
| 89 | PNDF | PONDEROSA FARMS INC | | | SCAC3 |
| 90 | PNDI | PANDA LOGISTICS LTD | | | SCAC4 |
| 91 | PNDL | PRENTICE, DALE L CO | | | SCAC3 |
| 92 | PNDM | PPKS Nowy Dwór Mazowiecky | | PL | TRAFFIC |
| 93 | PNDO | POUNDER OIL SERVICE INC | | | SCAC4 |
| 94 | PNDP | PINDER TRANSPORT LTD | | | SCAC4 |
| 95 | PNDQ | PANDESSIA MARITIME INC. | | | SCAC3 |
| 96 | PNDQ | POLARIS INDUSTRIES INC | | | SCAC4 |
| 97 | PNDR | PANDERS & SHIPP TRAVEL | | | SCAC3 |
| 98 | PNDR | PANDA TRUCKING | | | SCAC4 |
| 99 | PNDS | PONDEROSA SYSTEMS INC | | | SCAC3 |
| 100 | PNDS | PANADEROS TRUCKING | | | SCAC4 |
