| 1 | PH | Polynesian Limited | ICAO: PAO, Callsign: Polynesian, IATA Prefix: 162, | WS | AVCODES |
| 2 | PH | Phoenix Air Group, Inc. | ICAO: PHA, Callsign: Gray Bird, ICAO Designator changed to GRB. | USA | AVCODES |
| 3 | PH | Polynesian Airlines Ltd. | ICAO: PAO, Callsign: Polynesian, IATA Prefix: 162, | WS | AVCODES |
| 4 | PH | Transavia Denmark ApS | ICAO: TDK, Callsign: Green, Commenced operations on 06 November 2008. Ceased operations on 23 April 2011. | DK | AVCODES |
| 5 | PH | Pionair Australia Pty., Ltd. | ICAO: SFZ, Callsign: Skyforce, Name changed from Skyforce Aviation Pty., Ltd. During 2012 | AUS | AVCODES |
| 6 | PH | Phoenix Air Group, Inc. | ICAO: GRB, Callsign: Gray Bird, ICAO Designator changed from PHA. | USA | AVCODES |
| 7 | PH&D | Port Huron and Detroit R.R. Co. | 7/1965-10/1966 | | NAKINA |
| 8 | PH&D | Port Huron and Detroit R.R. Co. | 7/65-10/66 | | NRHS |
| 9 | PH&D | PORT HURON & DETROIT RAILROAD (NOW CSX TRANSPORTATION) | | | PWRC |
| 10 | PHA | Phoenix Air Group, Inc. | IATA: PH, Callsign: Gray Bird, ICAO Designator changed to GRB. | USA | AVCODES |
| 11 | PHA | Phoenix Air Group | | | ICAO1 |
| 12 | PHAC | PHILLY A C TOURS INC | | | SCAC3 |
| 13 | PHAD | PADRON HERNANDEZ, ADAN | | | SCAC4 |
| 14 | PHAE | PACIFIC HARBOR EXPRESS | | | SCAC3 |
| 15 | PHAE | PHINO TRANSFER | | | SCAC4 |
| 16 | PHAI | PHASE II TRANSPORTATION INC | | | SCAC4 |
| 17 | PHAK | PHILADELPHIA TANKER CORP | | | SCAC3 |
| 18 | PHAL | PHALANX LOGISTICS SOLUTIONS | | | SCAC4 |
| 19 | PHAM | PELHAM TRANSPORT SERVICES INC | | | SCAC4 |
| 20 | PHAN | PHANTOM EXPRESS, INC | | | SCAC3 |
| 21 | PHAP | PITTSBURG HOT LINK PACKER INC | | | SCAC4 |
| 22 | PHAR | PHARAOHS TRUCKING & STORAGE INC | | | SCAC4 |
| 23 | PHAS | PHARMA LASER | | | SCAC4 |
| 24 | PHAT | PARHAM TRUCKING | | | SCAC3 |
| 25 | PHAZ | PORT OF HOUSTON AUTHORITY | | | PWRC |
| 26 | PHB | Phoebus Apollo Aviation CC | IATA: PE, Callsign: Phoebus, IATA Prefix: 855, Designator PE recalled by IATA | ZA | AVCODES |
| 27 | PHB | Phoebus Apollo Aviation CC | Callsign: Phoebus, IATA Prefix: 855, Designator PE recalled by IATA | ZA | AVCODES |
| 28 | PHB | Phoebus Apollo Aviation | | | ICAO1 |
| 29 | PHB | Peter Hausmann & Co Bauunternehmung | | DE | VKM |
| 30 | PHBA | PHILADELPHIA BULK AGENCIES INC | | | SCAC3 |
| 31 | PHBC | PHILIP BROTHERS CHEMICAL INC | | | SCAC3 |
| 32 | PHBC | PHOENICIAN BULK CARRIERS LTD | | | SCAC4 |
| 33 | PHBE | PHOENIX BEREEDE | | | SCAC4 |
| 34 | PHBH | PANHANDLE BOAT HAULERS | | | SCAC3 |
| 35 | PHBI | PIONEER HI-BRED PRODUCTION LTD | | | SCAC4 |
| 36 | PHBL | POLKINHORN, BILL INC | | | SCAC4 |
| 37 | PHBM | PHIBER MANUFACTURING INC | | | SCAC4 |
| 38 | PHBR | PHILBAR TRANSPORTATION | | | SCAC3 |
| 39 | PHBR | PHILIPSBURG TRANSIT LTEE | | | SCAC4 |
| 40 | PHBS | PHILS BUS SERVICE | | | SCAC3 |
| 41 | PHC | Petroleum Helicopters de Colombia, S.A. | Callsign: Helicopters, Subsidary of Petroleum Helicopters, Inc. | CO | AVCODES |
| 42 | PHC | Petroleum Helicopters de Colombia | | | ICAO1 |
| 43 | PHC | PETROCART SA | | RO | VKM |
| 44 | PHCA | PANHANDLE COOPERATIVE ASSOCIATION | | | SCAC4 |
| 45 | PHCC | PANHANDLE CARTAGE COMPANY INCORPORA | | | SCAC4 |
| 46 | PHCH | P & H CHARTER | | | SCAC3 |
| 47 | PHCH | PHOTECH ENVIRONMENTAL SOLUTIONS INC | | | SCAC4 |
| 48 | PHCL | PHOENIX COURIER LTD | | | SCAC3 |
| 49 | PHCM | PATRIOT HAULING CO | | | SCAC4 |
| 50 | PHCO | PHILADELPHIA COKE | | | PWRC |
| 51 | PHCO | PHONECO | | | SCAC3 |
| 52 | PHCO | PACHECO, CARMEN TRANSPORTATION LLC | | | SCAC4 |
| 53 | PHCP | PHELPS, C P INC | | | SCAC4 |
| 54 | PHCQ | PHILLIPS TRUCKING COMPANY | | | SCAC3 |
| 55 | PHCR | PORT COLBORNE HARBOUR RAILWAY | | | PWRC |
| 56 | PHCR | Port Colborne Harbour Railway | | | RSRV |
| 57 | PHCT | PHILLIPS, CHARLES TRUCKING INC | | | SCAC3 |
| 58 | PHCU | SC INDUSTRIAL GAS MANUFACTURER LTD | | | SCAC4 |
| 59 | PHCX | Harnischfeger Corp. | 7/1965 (not listed); added 4/1966; 10/1966; eliminated 7/1969 | | NAKINA |
| 60 | PHCX | Harnischfeger Corp. | added 4/66; 7/65-10/66; eliminated 7/69 | | NRHS |
| 61 | PHCX | HARNISCHFEGER CORP. | | | PWRC |
| 62 | PHD | Duncan Aviation, Inc. | Callsign: Panhandle, | USA | AVCODES |
| 63 | PHD | Duncan Aviation | | | ICAO1 |
| 64 | PHD | Port Huron and Detroit R.R. Co. | 1/1975-7/2005; eliminated 10/2008 | | NAKINA |
| 65 | PHD | (PH&D) Port Huron and Detroit R.R. Co. | 4/1970 | | NAKINA |
| 66 | PHD | (PH&D) Port Huron and Detroit R.R. Co. | Apr-70 | | NRHS |
| 67 | PHD | Port Huron and Detroit R.R. Co. | 1/75-7/2000 | | NRHS |
| 68 | PHD | CSX TRANSPORTATION, INC. [CHESSIE SYSTEM; PORT HURON & DETROIT RAILROAD] | | | PWRC |
| 69 | PHD | Port Huron and Detroit Railroad (CSX Transportation) | | | RSRV |
| 70 | PHD | Port Huron and Detroit Railroad Company | City: Grodzisk Mazowiecki | USA | TRAFFIC |
| 71 | PHDB | PHYSICAL DISTRIBUTION SERVICES, INC. | | | SCAC3 |
| 72 | PHDB | PHYSICAL DISTRIBUTION SERVICE INC | | | SCAC4 |
| 73 | PHDC | PARHAM, H D CO INC | | | SCAC3 |
| 74 | PHDC | POLISH EXPRESS INC | | | SCAC4 |
| 75 | PHDH | PLATINUM HOME DELIVERY | | | SCAC4 |
| 76 | PHDI | PHIL-DI OF TEXAS | | | SCAC3 |
| 77 | PHDL | PHILLIPS, D L TRUCKING | | | SCAC3 |
| 78 | PHDN | PHIL-DAN TRUCKING | | | SCAC3 |
| 79 | PHDQ | PONDEROSA HEAVY DUTY TRUCKS INC | | | SCAC4 |
| 80 | PHDS | PITCHER, CARL L | | | SCAC4 |
| 81 | PHDT | P H D TRUCKING SERVICE INC | | | SCAC3 |
| 82 | PHDT | PICHARDO, D TRANSPORT | | | SCAC4 |
| 83 | PHDX | Phelps-Dodge Corp. | added 1/1960; 4/1961-1/1975; eliminated 10/1978 | | NAKINA |
| 84 | PHDX | Phelps-Dodge Corp. | added 1/60; 4/61-1/75; eliminated 10/78 | | NRHS |
| 85 | PHDX | PHELPS-DODGE CORP. | | | PWRC |
| 86 | PHDX | PHELPS DODGE CORP | | | SCAC3 |
| 87 | PHE | Pawan Hans Limited | Callsign: Pawan Hans, | IND | AVCODES |
| 88 | PHE | Pawan Hans | | | ICAO1 |
| 89 | PHEC | PHELCO INCORPORATED | | | SCAC3 |
| 90 | PHEE | PEREZ, HERIBERTO | | | SCAC4 |
| 91 | PHEH | P & H EXPRESS LLC | | | SCAC4 |
| 92 | PHEI | PHOTO EXPRESS INC | | | SCAC3 |
| 93 | PHEI | P H EXPRESS INC | | | SCAC4 |
| 94 | PHEK | PAINT HORSE EXPRESS ODS LLC | | | SCAC4 |
| 95 | PHEL | PHELAN, GERALD LLC | | | SCAC4 |
| 96 | PHEN | PHOENIX TRANSPORTATION INC | | | SCAC3 |
| 97 | PHEN | PHENIX TRANSPORTATION INC | | | SCAC4 |
| 98 | PHEO | PHILPET TRUCKING | | | SCAC3 |
| 99 | PHEP | PRAIRIE HYDRAULIC EQUIPMENT LTD | | | SCAC4 |
| 100 | PHEQ | PHELPS DELIVERY | | | SCAC3 |
