| 1 | PU | Pluna Lineas Aereas Urugauyas, S.A. | ICAO: PUA, Callsign: Pluna, IATA Prefix: 286, Founded in September 1936. Commenced operations on 19 November 1936. Ceased operations on 05 July 2012. Name changed from Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | ROU | AVCODES |
| 2 | PU | Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | ICAO: PUA, Callsign: Pluna, IATA Prefix: 286, Name changed to Pluna Lineas Aereas Urugauyas S.A. | ROU | AVCODES |
| 3 | PU | Plus Ultra Lineas Aereas, S.A. | ICAO: PUE, Callsign: Spanish, | E | AVCODES |
| 4 | PUA | Pluna Lineas Aereas Urugauyas, S.A. | IATA: PU, Callsign: Pluna, IATA Prefix: 286, Founded in September 1936. Commenced operations on 19 November 1936. Ceased operations on 05 July 2012. Name changed from Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | ROU | AVCODES |
| 5 | PUA | Primeras Lineas Uruguayas de Navegacion Aerea (PLUNA) | IATA: PU, Callsign: Pluna, IATA Prefix: 286, Name changed to Pluna Lineas Aereas Urugauyas S.A. | ROU | AVCODES |
| 6 | PUA | PLUNA | IATA: PU | | ICAO1 |
| 7 | PUAC | PUBLIC ARMORED CAR INC | | | SCAC3 |
| 8 | PUAM | PUNDA MERCANTILE | | | SCAC3 |
| 9 | PUAS | PUNJAB TRUCKING LTD | | | SCAC4 |
| 10 | PUB | Aeropublic, S.L. | Callsign: Aeropublic, | E | AVCODES |
| 11 | PUBC | PUBLIC TRANSPORT CORPORATION | | | SCAC3 |
| 12 | PUBC | PUBLIC TRANSPORT CORPORATION | | | SCAC4 |
| 13 | PUBD | PUBLIX DISTRIBUTING CO INC | | | SCAC3 |
| 14 | PUBF | PUBLIC FREIGHT SERVICE, Public, INC | | | SCAC3 |
| 15 | PUBF | PUBLIC FREIGHT SERVICE | | | SCAC4 |
| 16 | PUBI | PUBLIC INC | | | SCAC3 |
| 17 | PUBI | PUBLIC SPECIAL COMMODITY DIVISION I | | | SCAC4 |
| 18 | PUBK | PURBECK CO. S.A | | | SCAC3 |
| 19 | PUBL | PUBLIC SERVICE MOVERS INC | | | SCAC3 |
| 20 | PUBO | PURDY BROS TRUCKING CO INC | | | SCAC3 |
| 21 | PUBT | PUBLISHERS TRANSPORTATION CO, INC | | | SCAC3 |
| 22 | PUBT | PLATINUM PROMOTIONS | | | SCAC4 |
| 23 | PUBX | Publicker Industries, Inc. | added 1/1980; 1/1980; eliminated 7/1990; 1/1994-7/2005 (not listed) | | NAKINA |
| 24 | PUBX | Commercial Credit Industrial Corp. | added 1/1971; 1/1975; eliminated 1/1980 | | NAKINA |
| 25 | PUBX | Publicker Inc. | 7/1930-1/1943 | | NAKINA |
| 26 | PUBX | Commercial Credit Corp. | added 7/1964; 7/1965-4/1970; eliminated 1/1971 | | NAKINA |
| 27 | PUBX | Publicker Inc. | Apr-38 | | NRHS |
| 28 | PUBX | Commercial Credit Corp. | added 7/64; 7/65-4/70 | | NRHS |
| 29 | PUBX | Commercial Credit Industrial Corp. | 1/75; eliminated 1/80 | | NRHS |
| 30 | PUBX | Publicker Industries, Inc. | added 1/80; 1/80; eliminated 7/90; 1/94-7/2000 | | NRHS |
| 31 | PUBX | PUBLICKER INDUSTRIES, INC. [COMMERCIAL CREDIT CORP.] | | | PWRC |
| 32 | PUBX | Publicker Industries | | | RSRV |
| 33 | PUBX | COMMERCIAL CREDIT CORP | | | SCAC3 |
| 34 | PUBX | PUBLICKER INDUSTRIES INC | | | SCAC4 |
| 35 | PUCC | The Port Utilities Commission of Charleston, S.C. | added 7/1984; eliminated 1/1985; 1/1994-7/2005 | | NAKINA |
| 36 | PUCC | Port Utilities | 1/1975-1/1980 | | NAKINA |
| 37 | PUCC | Port Utilities | 1/75-1/80 | | NRHS |
| 38 | PUCC | The Port Utilities Commission of Charleston, S.C. | added 7/84; eliminated 1/85; 1/94-7/2000 | | NRHS |
| 39 | PUCC | PORT UTILITIES COMMISSION OF CHARLESTON, SC | | | PWRC |
| 40 | PUCC | Port Utilities Commission of Charleston South Carolina | | | RSRV |
| 41 | PUCC | PORT UTILITIES COMMISSION OF CHARLE | | | SCAC3 |
| 42 | PUCG | PUERTO RICO SUN OIL CO SHIPS AGENCY | | | SCAC3 |
| 43 | PUCG | PETES TRUCKING & ASSOCIATES LLC | | | SCAC4 |
| 44 | PUCH | PETROLEUM SERVICES INC | | | SCAC4 |
| 45 | PUCN | PUERTOLLANO COMPANIA NAVIERA S A, P | | | SCAC3 |
| 46 | PUCN | PNEUMATIC HAULERS LLC | | | SCAC4 |
| 47 | PUCO | PROFESSIONAL AUTO TRANSPORT INC | | | SCAC4 |
| 48 | PUCZ | PURE CULTURE PRODUCTS | | | PWRC |
| 49 | PUD | PUEBLO UNION DEPOT & RAILROAD COMPANY | | | PWRC |
| 50 | PUDD | PULLAR, DAROLD D | | | SCAC3 |
| 51 | PUDD | PANAM GROUP INTERNATIONAL INC | | | SCAC4 |
| 52 | PUDE | PUDENZ TRUCK LINE INC | | | SCAC3 |
| 53 | PUDE | PRICE TRUCKING | | | SCAC4 |
| 54 | PUDG | PUDONG TRANS USA INC | | | SCAC4 |
| 55 | PUDN | PUDENZ TRUCKING | | | SCAC4 |
| 56 | PUDO | PULIDO TRUCKING LP | | | SCAC4 |
| 57 | PUDY | PLANES MOVING & STORAGE COMPANY OF | | | SCAC4 |
| 58 | PUE | Aeropuelche, S.A. | Callsign: Puelche, | RCH | AVCODES |
| 59 | PUE | Plus Ultra Lineas Aereas, S.A. | IATA: PU, Callsign: Spanish, | E | AVCODES |
| 60 | PUE | Aeropuelche | | | ICAO1 |
| 61 | PUED | PUERINGER DISTRIBUTING | | | SCAC3 |
| 62 | PUED | PUNU TRANSPORT INC | | | SCAC4 |
| 63 | PUEG | PURE ENERGY SERVICES LTD | | | SCAC4 |
| 64 | PUEP | PUERTO RICO TRANSPORT CORP | | | SCAC4 |
| 65 | PUES | PROUTY, ERNEST & SONS | | | SCAC3 |
| 66 | PUES | PROUTY, ERNEST & SONS INC | | | SCAC4 |
| 67 | PUF | Wessex Aviation Limited t/a Air Alderney Limited | Callsign: Puffin, | GB | AVCODES |
| 68 | PUFF | PINE MOUNTAIN TRANSPORTATION INC | | | SCAC4 |
| 69 | PUFH | PUFFER, RAYMOND H INC | | | SCAC3 |
| 70 | PUFS | PUBLIC FREIGHT SYSTEM | | | SCAC3 |
| 71 | PUFS | PUTNAM TRANSPORT LLC | | | SCAC4 |
| 72 | PUGA | PUGA, ORLANDO ENT INC | | | SCAC4 |
| 73 | PUGE | PUGET SOUND TUG AND BARGE COMPANY | | | SCAC3 |
| 74 | PUGH | PROFICIENT AUTO INC | | | SCAC4 |
| 75 | PUGT | PUGAS TRUCKING | | | SCAC4 |
| 76 | PUHOS | Puhoksen Veturipalvelu OY | | FI | VKM |
| 77 | PUHT | PAPUCHIS TRUCKING INC | | | SCAC4 |
| 78 | PUIA | PULLIAM TRUCKING CO | | | SCAC3 |
| 79 | PUIC | PRUITT CARTAGE INC | | | SCAC4 |
| 80 | PUII | PRUITT TRUCKING INC | | | SCAC4 |
| 81 | PUIN | PELICAN UNLIMITED INC OF TN | | | SCAC4 |
| 82 | PUIQ | PUIMS TRUCKING CO | | | SCAC3 |
| 83 | PUIQ | POETTINGER US INC | | | SCAC4 |
| 84 | PUIT | PURITY TRANSPORTATION COMPANY | | | SCAC3 |
| 85 | PUIV | PNGL (USA) INC | | | SCAC4 |
| 86 | PUKL | PRISCO (UK) LTD OSLO NORWAY | | | SCAC3 |
| 87 | PUKM | PAVLICEK FARM | | | SCAC4 |
| 88 | PUKOM | Przedsiębiorstwo Usług Komunalnych Komorniki | City: Komorniki | PL | TRAFFIC |
| 89 | PUL | Pul. Przedsiebiorstwo Uslug Lotniczych | | PL | AVCODES |
| 90 | PUL | Ornge Air | Callsign: Pulse, | CDN | AVCODES |
| 91 | PULA | PULASKI COAL CO | | | SCAC3 |
| 92 | PULAWY | Miejski Zakład Komunikacji w Puławach | City: Puławy | PL | TRAFFIC |
| 93 | PULB | PULLEN BROS INC | | | SCAC3 |
| 94 | PULF | PROCARGO USA LLC | | | SCAC4 |
| 95 | PULHAM | Pulham & Sons (Coaches) Ltd. | | GB | TRAFFIC |
| 96 | PULI | PULLENS TRUCKING INC | | | SCAC3 |
| 97 | PULK | PULLEY, K. M | | | SCAC3 |
| 98 | PULL | RETIRED 05-15-92 ATP (0653) | | | PWRC |
| 99 | PULL | PULLENS TOURS | | | SCAC3 |
| 100 | PULL | PULLIAM TRANSPORT LLC | | | SCAC4 |
