| 1 | PRA | Flyair | Callsign: Prima, | E | AVCODES |
| 2 | PRA | Provence Aero Service | Callsign: Airpass, | F | AVCODES |
| 3 | PRA | Pars Aviation Service | | | ICAO1 |
| 4 | PRA | Holcim (Česko) a.s., člen koncernu | | CZ | VKM |
| 5 | PRAA | PEARL REEF OYSTER CO | | | SCAC4 |
| 6 | PRAB | PRICE, ALBERT E, INC | | | SCAC3 |
| 7 | PRAB | Peterson Rail AB | 2007 - 2012 | S | svenska-lok.se |
| 8 | PRAB | Peterson Rail AB | 2007 - 2012 | S | TRAFFIC |
| 9 | PRAB | Peterson Rail AB | | SE | VKM |
| 10 | PRAC | PRAXAIR CANADA INC | | | SCAC4 |
| 11 | PRAD | PATS RADIATOR SERVICE LTD | | | SCAC4 |
| 12 | PRAF | PRECISION AIR FREIGHT | | | SCAC3 |
| 13 | PRAF | PRENDERGAST, RICK TRUCKING | | | SCAC4 |
| 14 | PRAG | PREMIER AG CO OP INC | | | SCAC4 |
| 15 | PRAG | Dopravní podnik hl. m. Prahy | Real: DPP, City: Praha | CZ | TRAFFIC |
| 16 | PRAGA | | | CZ | TRAFFIC |
| 17 | PRAH | PRESTIN, ALBERT E | | | SCAC3 |
| 18 | PRAH | PROSSER, ALBERT S TRANSPORT | | | SCAC4 |
| 19 | PRAI | PRESTERA TRUCKING CO INC | | | SCAC3 |
| 20 | PRAI | PRESTERA TRUCKING CO INC | | | SCAC4 |
| 21 | PRAIL | Port Rail OOD | | BG | VKM |
| 22 | PRAK | PROCKNAL & KATRA TRUCKING CO INC | | | SCAC3 |
| 23 | PRAL | PRICE, A L INC | | | SCAC3 |
| 24 | PRAN | PRANGE, LESTER M INC | | | SCAC3 |
| 25 | PRAO | PREVOST, ARLINGTON A | | | SCAC3 |
| 26 | PRAO | PREMIER MILLWORK | | | SCAC4 |
| 27 | PRAP | PRATER ENTERPRISES INC | | | SCAC3 |
| 28 | PRAQ | PRATT TRUCKING | | | SCAC3 |
| 29 | PRAQ | PRATT TRUCKING (ELLEN E PRATT D/B/A | | | SCAC4 |
| 30 | PRAR | PRATT TRANSPORTATION CO INC | | | SCAC3 |
| 31 | PRAS | PRINCETON ARMORED SERVICE INC | | | SCAC3 |
| 32 | PRAS | PROLINE AG SERVICE INC | | | SCAC4 |
| 33 | PRAU | PARATORI S.P.A. | | I | BIC |
| 34 | PRAU | PRADON | | | SCAC3 |
| 35 | PRAU | PRADA AMERICAS CUP S R L | | | SCAC4 |
| 36 | PRAW | PRIMO TRUCKING INC | | | SCAC4 |
| 37 | PRAX | First Union Rail | added 7/1996; 7/2000-7/2005 | | NAKINA |
| 38 | PRAX | Pacific Rail Leasing Corp. | added 7/1991; 1/1994; eliminated 7/1996 | | NAKINA |
| 39 | PRAX | Pacific Rail Leasing Corp. | added 7/91; 1/94; eliminated 7/96 | | NRHS |
| 40 | PRAX | First Union Rail | added 7/96; 7/2000 | | NRHS |
| 41 | PRAX | *PREMIER AG | | | PWRC |
| 42 | PRAX | +FIRST UNION RAIL [PACIFIC RAIL LEASING CORPORATION] | | | PWRC |
| 43 | PRAX | Pacific Rail Leasing Corp (First Union Rail) | | | RSRV |
