| 1 | PP | Jet Aviation Business Jets AG | ICAO: PJS, Callsign: Jet Aviation, Name changed from Private Jet Services AG | CH | AVCODES |
| 2 | PP | Pilatus S.A. Air Serivce | Callsign: Pilatus, | CH | AVCODES |
| 3 | PP | Private Jet Services AG | ICAO: PJS, Callsign: Papa Papa, Name changed to Jet Aviation Business Jets AG | CH | AVCODES |
| 4 | PP | PUBLISHERS PAPER | | | PWRC |
| 5 | PP | Posázavský Pacifik doprava s.r.o. | | CZ | TRAFFIC |
| 6 | PP | Posázavský Pacifik – doprava s.r.o. | | CZ | VKM |
| 7 | PP&U | PEORIA & PEKIN UNION RAILWAY CO. | | | PWRC |
| 8 | PPA | Propheter Construction Cctipany, Inc. d/b/a Propheter Aviation | Callsign: Air Prop, | USA | AVCODES |
| 9 | PPA | Propheter Aviation | | | ICAO1 |
| 10 | PPAA | PAULS PRIORITY TRUCKS | | | SCAC4 |
| 11 | PPAB | PAPPAS BUILDERS SUPPLY | | | SCAC3 |
| 12 | PPAC | PARTS PLUS AUTOMOTIVE SERVICE CENTE | | | SCAC3 |
| 13 | PPAC | POST PACKAGING OF WINDSOR INC | | | SCAC4 |
| 14 | PPAE | PROPEL TRUCKING INC | | | SCAC4 |
| 15 | PPAF | PANALPINA INC | | | SCAC3 |
| 16 | PPAF | PANALPINA INC | | | SCAC4 |
| 17 | PPAI | PAULINE TRANSPORTATION | | | SCAC3 |
| 18 | PPAJ | POSITANO, A J PAVING | | | SCAC4 |
| 19 | PPAK | PROPAK LOGISTICS INC | | | SCAC4 |
| 20 | PPAL | PIERCE, E PAUL | | | SCAC3 |
| 21 | PPAL | PACIFIC ENERGY CORP | | | SCAC4 |
| 22 | PPAN | Peter Pan Bus Lines | | US-MA | TRAFFIC |
| 23 | PPAO | P & P ASSOCIATES INC | | | SCAC4 |
| 24 | PPAP | PAULS PAPER | | | SCAC4 |
| 25 | PPAS | PANAMA PACKING & STORAGE | | | SCAC3 |
| 26 | PPAS | POTOPAS CONCESSIONS INC | | | SCAC4 |
| 27 | PPAU | NEXXUS LEASING CO LTD | | | SCAC4 |
| 28 | PPAX | PCS Phosphate Co., Inc. | added 4/1999; 7/2000-7/2005 | | NAKINA |
| 29 | PPAX | Peoria Packing Co. | 7/1937-1/1943 | | NAKINA |
| 30 | PPAX | Polar Producing & Gasoline Co. | 8/1932 | | NAKINA |
| 31 | PPAX | Peoria Packing Co. | Apr-38 | | NRHS |
| 32 | PPAX | PCS Phosphate Co., Inc. | added 4/99; 7/2000 | | NRHS |
| 33 | PPAX | *POLAR PRODUCING & GASOLINE CO. | | | PWRC |
| 34 | PPAX | *PEORIA PACKING CO. | | | PWRC |
| 35 | PPAX | +PCS PHOSPHATE COMPANY | | | PWRC |
| 36 | PPAX | PCS Phosphate | | | RSRV |
| 37 | PPAX | PCS PHOSPHATE COMPANY INC | | | SCAC4 |
| 38 | PPBA | P & O PORTS BALTIMORE INC | | | SCAC4 |
| 39 | PPBD | Port of Palm Beach District | 1/1975-1/1980 | | NAKINA |
| 40 | PPBD | PORT OF PALM BEACH TERMINAL | | | PWRC |
| 41 | PPBD | PORT OF PALM BEACH DISTRICT | | | SCAC3 |
| 42 | PPBI | PITA PITA BAKERY INC | | | SCAC4 |
| 43 | PPBK | PACELLA PIGGYBACK INC | | | SCAC3 |
| 44 | PPBK | PARRISH GROUP LLC | | | SCAC4 |
| 45 | PPC | Palau Asia Pacific Airlines | Callsign: Palau Asiapac, | PAL | AVCODES |
| 46 | PPC | Palau Asia Pacific Airlines | | | ICAO1 |
| 47 | PPCB | POWERS, PATRICK CUSTOM BROKERS INC | | | SCAC4 |
| 48 | PPCC | PETROLEUM PACKAGE CARRIER COMPANY | | | SCAC3 |
| 49 | PPCD | PELICAN PACKAGING COMPANY TRUCKING | | | SCAC4 |
| 50 | PPCE | PPC PRODUCTION PRODUCTS COMPANY | | | SCAC4 |
| 51 | PPCH | PEOPLES CHOICE, THE | | | SCAC3 |
| 52 | PPCH | PRAIRIE PETRO-CHEM | | | SCAC4 |
| 53 | PPCI | PPC INC | | | SCAC4 |
| 54 | PPCJ | POWER PROCESS CONTROL SA DE CV | | | SCAC4 |
| 55 | PPCK | P & P CARRIERS LLC | | | SCAC4 |
| 56 | PPCM | PACIFIC PRODUCE COMPANY LIMITED | | | SCAC3 |
| 57 | PPCM | PACIFIC PRODUCE CO LTD | | | SCAC4 |
| 58 | PPCP | PUCKERED PICKLE COMPANY, THE | | | SCAC4 |
| 59 | PPCQ | PIPELINE CONNECTORS INTERNATIONAL L | | | SCAC4 |
| 60 | PPCR | PARS PRIVATE CAR SERVICE | | | SCAC3 |
| 61 | PPCT | PAPERCRAFT INC | | | SCAC3 |
| 62 | PPCT | PACIFIC PRIDE CHICKS LTD | | | SCAC4 |
| 63 | PPCU | KANTO-PPC INC | | RC | BIC |
| 64 | PPCU | AZTEC PEROXIDES,INC | | | SCAC3 |
| 65 | PPCU | PROSPERCHEM INC | | | SCAC4 |
| 66 | PPCV | PRAIRIE PRIDE COOPERATIVE | | | SCAC4 |
| 67 | PPCW | PRO-POWER CANADA INC | | | SCAC4 |
| 68 | PPCX | Perfect Packed Products Co., Inc. | 1/1950-10/1957; eliminated 7/1959 | | NAKINA |
| 69 | PPCX | Peyton Packing Co. (Mather Stock Car Co.) | 1/1941-1/1943; 1/1945 (not listed) | | NAKINA |
| 70 | PPCX | Peyton Packing Co. | 7/1930-4/1938 | | NAKINA |
| 71 | PPCX | Peyton Packing Co. (Mather Stock Car Co.) | Apr-38 | | NRHS |
| 72 | PPCX | Perfect Packed Products Co., Inc. | 1/52-10/57; eliminated 7/59 | | NRHS |
| 73 | PPCX | *PERFECT PACKED PRODUCTS CO. [PEYTON PACKING CO.] 9MATHER STOCK CAR CO.) | | | PWRC |
| 74 | PPCX | *AAPRCO LIST OF PRIVATELY OWNED PASSENGER CARS & LOCOMOTIVE EQUIP. | | | PWRC |
| 75 | PPCX | American Association of Private Railroad Car Owners (AAPRCO) | | | RSRV |
| 76 | PPCX | PRIVATELY OWNED PASSENGER CARS & LO | | | SCAC4 |
| 77 | PPCY | PAPER CITY TRANSPORT INC | | | SCAC3 |
| 78 | PPCZ | POTLACH PAPER CO. | | | PWRC |
| 79 | PPD | Personal Air Transport Ltd. | Callsign: Personal, Flights operated by Air Prague | M | AVCODES |
| 80 | PPDA | PETROLEUM PRODUCTS LLC | | | SCAC4 |
| 81 | PPDD | PROLOGIC PLRS DE MUZQUIZ S DE RL DE | | | SCAC4 |
| 82 | PPDE | PRAIRIE PRIDE ENTERPRISES INC | | | SCAC4 |
| 83 | PPDH | PAPAZIAN, RONALD & DONALD HARGIS | | | SCAC3 |
| 84 | PPDI | PPD UHMW INDUSTRIES | | | SCAC4 |
| 85 | PPDL | P.I.P. DELIVERY&COURIER SERVICE, INC | | | SCAC3 |
| 86 | PPDL | PLANT PEDDLERS INC | | | SCAC4 |
| 87 | PPDN | PACIFIC PRODUCE INC | | | SCAC4 |
| 88 | PPDP | PROVIDENCE-PHILADELPHIA DISPATCH IN | | | SCAC3 |
| 89 | PPDQ | PHOENIX-PDQ INC | | | SCAC4 |
| 90 | PPDS | PACIFIC PARADISE SHIPPING INC | | | SCAC4 |
| 91 | PPEA | PAPE, ART, TRANSFER INC | | | SCAC3 |
| 92 | PPEB | PIN POINT ENTERPRISES INC | | | SCAC4 |
| 93 | PPEG | PHARMALOGIC P E T SERVICES OF MONTR | | | SCAC4 |
| 94 | PPEM | PIERCE PROMOTIONS AND EVENT MANAGEM | | | SCAC4 |
| 95 | PPEO | PAPER PEOPLE | | | SCAC4 |
| 96 | PPEQ | PURE PLAYAZZ ENTERPRISES INC | | | SCAC4 |
| 97 | PPER | PAPPAS BUILDERS SUPPLY | | | SCAC4 |
| 98 | PPES | P P E TRANSPORTATION SERVICE INC | | | SCAC3 |
| 99 | PPET | PIPPERT TRUCKING | | | SCAC3 |
| 100 | PPET | POWER PETROLEUM INC | | | SCAC4 |
