| 1 | PRE | Precision Airlines | Callsign: Precision, Name changed to Precision Aircraft Management. | USA | AVCODES |
| 2 | PRE | Precision Aircraft Management | Callsign: Precision, Name changed from Precision Airlines. | USA | AVCODES |
| 3 | PRE | Precision Airlines | | | ICAO1 |
| 4 | PREA | Philadelphia & Reading | Real: PR | USA | TRAFFIC |
| 5 | PREB | PRESNELL BROS | | | SCAC3 |
| 6 | PREB | PRO MODEL BUILDERS INC | | | SCAC4 |
| 7 | PREC | PREMIER CARTAGE, INC | | | SCAC3 |
| 8 | PREC | PREMIER CARTAGE COMPANY | | | SCAC4 |
| 9 | PRECH | PRECHEZA a.s. | | CZ | VKM |
| 10 | PRED | PRINCE EDWARD ISLAND BAG COMPANY LT | | | SCAC4 |
| 11 | PRED | PREDEMET SA | | RO | VKM |
| 12 | PREE | PRIME RESTAURANT EQUIPMENT CO INC | | | SCAC4 |
| 13 | PREF | PFT ROBERSON, INC | | | SCAC3 |
| 14 | PREF | PRE-FAB TRANSIT CO | | | SCAC4 |
| 15 | PREFA | PREFAB S.A. | | RO | VKM |
| 16 | PREG | POLREGIO sp. z o.o. | | PL | TRAFFIC |
| 17 | PREG | \'Przewozy Regionalne\'\' Sp.z o.o. | | PL | VKM |
| 18 | PREI | PEREIRA TRUCKING | | | SCAC3 |
| 19 | PREI | PROMPT EXPRESS INC | | | SCAC4 |
| 20 | PREJ | PRECON INTERNATIONAL INC | | | SCAC3 |
| 21 | PREJ | PRECON INTERNATIONAL INC | | | SCAC4 |
| 22 | PREL | PREMIER LOGISTICS INCORPORATED | | | SCAC4 |
| 23 | PREM | PREMIER TRUCKING SERV CO | | | PWRC |
| 24 | PREM | Premier Bus Company | City: London | GB | TRAFFIC |
| 25 | PREO | PURE OIL PIPE LINE COMPANY | | | SCAC3 |
| 26 | PREO | PREMCOR REFINING GROUP INC & SUBSID | | | SCAC4 |
| 27 | PREP | PRESTI PRODUCE, INC | | | SCAC3 |
| 28 | PREP | PREMIER PYROTECHNICS INC | | | SCAC4 |
| 29 | PREQ | PREISLER MOTOR SERVICE, INC | | | SCAC3 |
| 30 | PRES | PRESTON TRUCKING, INC. | | | PWRC |
| 31 | PRES | PRESTON TRUCKING COMPANY, INC | | | SCAC3 |
| 32 | PRES | PRESTON TRUCKING COMPANY INC | | | SCAC4 |
| 33 | PRESS | Eisenbahn Bau und Betriebsgesellschaft Pressnitztal mbH | Jöhstadt | D | privat-bahn.de |
| 34 | PRESS | Eisenbahnbau- und Betriebsgesellschaft Preßnitztalbahn mbH | | D | TRAFFIC |
| 35 | PRESS | Eisenbahn-Bau- und Betriebsgesellschaft Pressnitztalbahn mbH | | DE | VKM |
| 36 | PRET | PRESS TRANSFER, INC | | | SCAC3 |
| 37 | PREU | PRIME, INC. | | | PWRC |
| 38 | PREU | Prime Inc. | | | RSRV |
| 39 | PREU | PRIME, INC. | | | SCAC3 |
| 40 | PREU | PRIME, INC. | | | SCAC4 |
| 41 | PREU | PBG - Preussenbahn GmbH | | DE | VKM |
| 42 | PREV | PREVETT OIL CO INC | | | SCAC4 |
| 43 | PREW | PRESTIGE | | | SCAC4 |
| 44 | PREX | Pioneer Railroad Equipment Co. Ltd. | added 7/1994; eliminated 4/1997; 7/2000-7/2005 (not listed) | | NAKINA |
| 45 | PREX | REA Express, Inc. | added 1/1971; eliminated 4/1974 | | NAKINA |
| 46 | PREX | REA Express, owned and operated by Railway Express Agency, Inc. | eliminated 1/1971 | | NAKINA |
| 47 | PREX | Pacific Refining Co. | 7/1923 | | NAKINA |
| 48 | PREX | REA Express | added 10/1970 | | NAKINA |
| 49 | PREX | REA Express | added 10/70; eliminated 4/74 | | NRHS |
| 50 | PREX | Pioneer Railroad Equipment Co. Ltd. | added 7/94; eliminated 4/97; 7/2000 | | NRHS |
| 51 | PREX | *PACIFIC REFINING CO. | | | PWRC |
| 52 | PREX | *REA EXPRESS, INC. (RAILWAY EXPRESS AGENCY, INC.) | | | PWRC |
| 53 | PREX | +PIONEER RAILROAD EQUIPMENT CO., LTD. | | | PWRC |
| 54 | PREX | Pioneer Railroad Equipment | | | RSRV |
| 55 | PREX | PIONEER RAILROAD EQUIPMENT CO., LTD | | | SCAC4 |
| 56 | PREX | Peoria & Western Railway | | USA | TRAFFIC |
| 57 | PREZ | PRIME INCORPORATED | | | PWRC |
| 58 | PREZ | Prime Inc. | | | RSRV |
| 59 | PREZ | PRIME INC | | | SCAC4 |
