| 7601 | RPP | Government of the Philippines | Callsign: Pilipinas, | RP | AVCODES |
| 7602 | RPPC | RELIANCE SHIPPING CORP MONROVIA LIB | | | SCAC3 |
| 7603 | RPPI | READY PAC PRODUCE INC | | | SCAC4 |
| 7604 | RPPQ | RAPID PARCEL DELIVERY CO | | | SCAC3 |
| 7605 | RPPT | RAPP TRANSPORT INC | | | SCAC3 |
| 7606 | RPPU | PHOENIX PRODUCTS | | USA | BIC |
| 7607 | RPPX | Hexion Specialty Chemicals, Inc. | added 7/2007 | | NAKINA |
| 7608 | RPPX | Resolution Performance Products LLC | added 1/2003; 7/2005; eliminated 7/2007 | | NAKINA |
| 7609 | RPPX | *RESOLUTION PERFORMANCE PRODUCTS LLC | | | PWRC |
| 7610 | RPPX | +HEXION SPECIALTY CHEMICALS, INC. | | | PWRC |
| 7611 | RPPX | Resolution Performance Products | | | RSRV |
| 7612 | RPPX | RESOLUTION PERFORMANCE PRODUCTS LLC | | | SCAC4 |
| 7613 | RPQH | RAFTER P QUARTER HORSE RANCH | | | SCAC4 |
| 7614 | RPQT | R & P TRUCKING | | | SCAC4 |
| 7615 | RPR | Aeroservicios Paraguana C.A. Aeropar | Callsign: Aeropar, | YV | AVCODES |
| 7616 | RPR | Administracion Profesional de Aeronaves, S.A. de C.V. | Callsign: Aeroprofesional, | MEX | AVCODES |
| 7617 | RPR | RailParty Rheinland GmbH | | DE | VKM |
| 7618 | RPRC | Richmond Pacific R.R. Corp. | 7/2005 | | NAKINA |
| 7619 | RPRC | RICHMOND PACIFIC RAILROAD CORP. | | | PWRC |
| 7620 | RPRC | Richmond Pacific Railroad | | | RSRV |
| 7621 | RPRC | RAPID RUN INC | | | SCAC3 |
| 7622 | RPRC | RICHMOND PACIFIC RAILROAD CORPORATI | | | SCAC4 |
| 7623 | RPRC | Richmond Pacific Railroad Corporation | | USA | TRAFFIC |
| 7624 | RPRD | ROTH PRODUCTS INC | | | SCAC3 |
| 7625 | RPRD | RAMOS PICASSO, ROLANDO | | | SCAC4 |
| 7626 | RPRE | RAPID RUNNER EXPRESS | | | SCAC3 |
| 7627 | RPRE | RPR ENVIRONMENTAL | | | SCAC4 |
| 7628 | RPRI | RAPID RADIAL TRANSPORT INC | | | SCAC3 |
| 7629 | RPRK | RAILCAR-PARKER INC. | | | PWRC |
| 7630 | RPRL | R.P.R. TRANSPORT LTEE | | | SCAC3 |
| 7631 | RPRN | R P R TRUCKING INC | | | SCAC3 |
| 7632 | RPRO | RailPro | | NL | TRAFFIC |
| 7633 | RPRR | RIPP, ROBERT A | | | SCAC3 |
| 7634 | RPRS | Railsystems RP GmbH | | DE | VKM |
| 7635 | RPRT | RUPERT OIL COMPANY INC | | | SCAC4 |
| 7636 | RPRU | RHONE-PROGIL | | | SCAC3 |
| 7637 | RPRV | RN PRODUCE | | | SCAC4 |
| 7638 | RPRX | North American Car Corp. | added 7/1955; eliminated 10/1957; added 1/1958; 4/1961-1/1980; eliminated 7/1982 | | NAKINA |
| 7639 | RPRX | Mather Stock Car Co. | eliminated 7/1955 | | NAKINA |
| 7640 | RPRX | Rath Packing Co. (Mather Stock Car Co.) | 4/1947-7/1954 | | NAKINA |
| 7641 | RPRX | Mather Stock Car Co. | 1/1946 | | NAKINA |
| 7642 | RPRX | Rath Packing Co. (Mather Stock Car Co.) | 1/1941-1/1945 | | NAKINA |
| 7643 | RPRX | Rath Packing Co. | 7/1937-4/1938 | | NAKINA |
| 7644 | RPRX | The Rath Packing Co. | 8/1920-7/1935 | | NAKINA |
| 7645 | RPRX | Rath Packing Co. (Mather Stock Car Co.) | 4/38-1/52 | | NRHS |
| 7646 | RPRX | Mather Stock Car Co. | eliminated 7/55 | | NRHS |
| 7647 | RPRX | North American Car Corp. | added 7/55; eliminated 10/57; added 1/58; 4/61-1/80; eliminated 7/82 | | NRHS |
| 7648 | RPRX | RATH PACKING CO. (NACCO [MATHER STOCK CAR CO.]) | | | PWRC |
| 7649 | RPRX | Railpower Hybrid Technologies Corp | | | RSRV |
| 7650 | RPRX | RAILPOWER TECHNOLOGIES INC | | | SCAC4 |
| 7651 | RPRX | Rail Power Technologies | | USA | TRAFFIC |
| 7652 | RPS | Air Response, Inc. | Callsign: Call-sign, ICAO callsign changed to Response | USA | AVCODES |
| 7653 | RPS | Air Response North, Inc. | Callsign: Response, Name changed to Global Air Charter, Inc. Name changed from Air Resonse Inc. / ICAO callsign changed from Call-sign | USA | AVCODES |
| 7654 | RPS | Air Response, Inc. | Callsign: Response, Name changed to Air Resonse North Inc. ICAO callsign changed from Call-sign | USA | AVCODES |
| 7655 | RPS | Global Air Charter, Inc | Callsign: Response, Name changed from Air Response North, Inc. Name changed from Air Resonse Inc. / ICAO callsign changed from Call-sign | USA | AVCODES |
| 7656 | RPS | Global Air Charter | | | ICAO1 |
| 7657 | RPS | RAILROAD PUBLICATION SERVICES | | | PWRC |
| 7658 | RPS | ROADWAY PACKAGE SYSTEM, INC. | | | PWRC |
| 7659 | RPS | RAILROAD PUBLICATION SERVICES | | | SCAC4 |
| 7660 | RPS | Rail Professionals Stütz GmbH | | AT | VKM |
| 7661 | RPSA | R P S ASSOCIATES | | | SCAC3 |
| 7662 | RPSA | RAPTIS, ANDREW G ENTERPRISE | | | SCAC4 |
| 7663 | RPSB | RPS INC (MULTICODE LABEL DIVISION) | | | SCAC4 |
| 7664 | RPSC | RPS INC (RETAIL LABEL DIVISION) | | | SCAC4 |
| 7665 | RPSE | REPSEL TRUCKING INC | | | SCAC3 |
| 7666 | RPSE | RPM & ASSOCIATES INC | | | SCAC4 |
| 7667 | RPSF | ROCKY POINTE SEAFOOD | | | SCAC4 |
| 7668 | RPSG | RIMPACIFIC SHIPPING UK LTD LONDON | | | SCAC3 |
| 7669 | RPSI | ROADWAY PACKAGE SYSTEM, INC | | | SCAC3 |
| 7670 | RPSI | RPS INC | | | SCAC4 |
| 7671 | RPSI | Railway Preservation Society of Ireland | | IE | VKM |
| 7672 | RPSK | RPS TRUCKING CO | | | SCAC4 |
| 7673 | RPSL | RELIANCE PACIFIC SHIPPING LTD | | | SCAC3 |
| 7674 | RPSM | RAPPS MOVING AND STORAGE INC | | | SCAC3 |
| 7675 | RPSO | REPLOGLE STORAGE COMPANY | | | SCAC3 |
| 7676 | RPSO | RHINO PRINT SOLUTIONS | | | SCAC4 |
| 7677 | RPSP | REPSOL PETROLEO S A | | | SCAC3 |
| 7678 | RPSS | ROYAL PAPER STOCK CO INC | | | SCAC4 |
| 7679 | RPST | RESPESS TRUCKING INC | | | SCAC3 |
| 7680 | RPSV | RAPID SERV INC | | | SCAC3 |
| 7681 | RPSX | *RAIL PASSENGER SERVICE, INC. | | | PWRC |
| 7682 | RPSX | +SIERRA MADRE EXPRESS, INC. | | | PWRC |
| 7683 | RPSX | SIERRA MADRE EXPRESS INC | | | SCAC4 |
| 7684 | RPTB | RAPID TRANSIT | | | SCAC3 |
| 7685 | RPTC | RAPP TRANSFER & STORAGE CO | | | SCAC3 |
| 7686 | RPTD | RAPID TRANSIT DELIVERY SYSTEMS | | | SCAC3 |
| 7687 | RPTE | RPT INC | | | SCAC3 |
| 7688 | RPTE | R P TRANSPORT SERVICES INC | | | SCAC4 |
| 7689 | RPTF | RAPIDO TRANSFER INC | | | SCAC3 |
| 7690 | RPTG | R&P TRUCKING | | | SCAC3 |
| 7691 | RPTG | R & P TRUCKING | | | SCAC4 |
| 7692 | RPTH | R & P TRUCKING | | | SCAC3 |
| 7693 | RPTI | RAPPA EXPORT TRUCKING INC | | | SCAC3 |
| 7694 | RPTI | R P TRUCKING INC | | | SCAC4 |
| 7695 | RPTJ | RAPID TRANSPORT INC | | | SCAC3 |
| 7696 | RPTJ | RAPID TRANSPORT INC | | | SCAC4 |
| 7697 | RPTK | RAPTOR TRUCKING | | | SCAC4 |
| 7698 | RPTL | ROGERS PETROLEUM SERVICES INC | | | SCAC4 |
| 7699 | RPTM | RAPID TRANSIT MOTOR FREIGHT INC | | | SCAC3 |
| 7700 | RPTM | RP TRANSPORTATION LLC | | | SCAC4 |
