| Acronyms | Meaning / Significance |
Source |
| R | relay | |
| R&D | Research and Development | |
| RAA | redeployment assembly area | |
| RAAP | Rapid Accelaration of Air Power | |
| RAC | Regional Air Commander | |
| RACE | RApid off-line Crypto Equipment | |
| RACE | research on advanced communications in Europe | |
| RADAR | RAdio Detection And Ranging | |
| RADAT | research and development in advanced telecommunications | |
| RADNET | RADAR Data Interchange Network (RADARdatennetzwerk) | |
| RAFCSS | RAF Command Support System | |
| RAFFTS | RAF fixed telecommunication system | |
| RAILS | relational analysis of interconnected linkages system | |
| RAM | Random Access Memory | |
| RAM | reliability, availability and maintainability | |
| RAO | rear area operation | |
| RAOC | regional air operations centre | |
| RAP | radio access point | |
| RAP | recognized air picture | Ex Strong Resolve 95 |
| RAP | restricted access processor | |
| RAPIDE | relocatable army processors for intelligence data - Europe | |
| RAPNET | Regional ATS Packet Switched Network | |
| RAPS | RADAR Data Recording, Analysis and Playback System | |
| RASP | EUROCONTROL RADAR Application Specialist Panel | |
| RASP | Recognized Air and Surface Picture | |
| RATT | Radio Activated Teletype | |
| RC | required capability | |
| RCC | Rescue Control Center | |
| RCCN | reporting and control communications network | part of NNCS |
| RCFEP | RADAR Communication Front-End-Processor | |
| RCMC | regional communications management centre | |
| RCP | remote procedure call | STC CSNI final report 22/9/95 |
| RCP | reserved circuit programme | part of NICS |
| RCWG | Replication Coordination Working Group | |
| RDA | Remote Data Accessor | |
| RDA | remote database access | |
| RDBMS | Relational Data Base Management System | |
| RDCP | RADAR Data Processing System | |
| RDF | radio direction-finding | |
| RDN | Relative Destinguished Name | |
| RDPS | RADAR Data Processing System | |
| RDQC | RADAR Data Quality Control | |
| RDR | RADAR Data Recording | |
| REC | Radio Electronic Combat | |
| REC | Reply Evaluation Criteria | |
| RELLA | regional long-line agency | |
| REMD | Radio Encryption and Multiplex Device | |
| REMP | RADAR Erneuerungs- und Modifizierungsprogramm | |
| RER | radio-electronic reconnaissance | |
| RES | RADAR environment simulation | |
| RES | radio electronic support | |
| RF | Radio Frequency | |
| RF | Reaction Forces | |
| RFAS | Reaction Forces Air Staff | |
| RFB | Request for Bids | |
| RFBV | request for bidder's view | |
| RFEP | RADAR Front End Processor | |
| RFI | Request for Information | |
| RFP | Request for Proposal | |
| RFQ | Request for Quotation | |
| RID | Remote Interface Device | |
| RIP | routing information protocol | |
| RIS | RADAR integration system | |
| RISC | reduced instruction set computer | |
| RIT | RADNET Implementation Team | |
| RIXT | remote information exchange terminal | |
| RLT | radio link tails | maritime |
| RM | Reference Model | |
| RM | Resource Modules | |
| RMA | Reliability, Maintainability and Availability | |
| RMA | Replacement Mobile Asset | |
| RMC | Resource Centre Manager | |
| RMCDE | RADAR Message Conversion and Distribution Equipment | |
| RMG | routing metric generator | STC CSNI final report 22/9/95 |
| RMON | remote monitoring | |
| RMP | Recognised Maritime Picture | |
| RNAV | Relative Navigation | |
| RNCP | rationalised NATO communication programme | |
| RNP | Remote Network Processor | |
| RNP | Required Navigation Performance | |
| RO | Rationalisation Offer | |
| ROA | regional operating authority | |
| ROC | Regional Operating Centre | NACOSA Support Element |
| ROCLANT | Operating Centre, atLANTic | NACOSA Support Element |
| ROE | Rules of Engagement | |
| ROS | Remote Operation Service | |
| ROSE | remote operations service entry | |
| RP | release point | |
| RP | Reporting Point | |
| RP | reporting post | |
| RPC | RAP production centre | |
| RPC | Recognized Air Picture Prodution Center | |
| RPC | remote procedure call | |
| RPL | Repetitive Flight Plan | |
| RPO | Regional Project Office | |
| RPOA | Recognised Private Operating Agency | |
| RPOA | recognised privately operated agency | |
| RPV | remotely piloted vehicle | |
| RRD | Random Reply Delay | |
| RRF | Rapid Reaction Force | |
| RRP | rapid reinforcement plan | |
| RRP | review and release position | |
| RRR | radio relay repeater | |
| RRT | radio relay terminal | |
| RRW | review and release workstation | NACISA/APD/04.07.00(95)001 |
| RS | Rationalisation System | |
| RSAP | RADNET Service Access Point | |
| RSCS | Remote Supervisory and Control System | |
| RSE | rear staff element | |
| RSG | regional signal group | |
| RSG | research study group | |
| RSGS | Regional Signal Group SHAPE | NACOSA Support Element |
| RSLS | Replay Path Side Lobe Suppression | |
| RSP | Recognised Surface Picture | |
| RSSC | regional system support centre | |
| RSSP | RADAR Systems Specialist Panel | |
| RSU | receiver-sender unit | |
| RT | Router | |
| R&T | Research & Technology | |
| RTC | radio transmission control | |
| RTF | rich text format | ACE ACCIS core cap specs |
| RTMDE | RADNET Test Monitoring and Demonstration Equipment | |
| RTO | R&T Organisation | |
| RTP | research and technology project | |
| RTS | Reliable Transfer Service | |
| RTSE | Reliable Transfer Service Element | |
| RTTS | Real Time Transmission System | |
| RWG | Requirements Working Group | |
| RWR | RADAR warning receiver |