| RN | Reference Noise |
| CIRC | Circular Reference |
| NPR | Non Persistent Reference |
| RM | Reference Model |
| EXTRN | External Reference |
| TOR | Terms Of Reference |
| LIR | Line Reference |
| MRS | Master Reference Source |
| IRM | Isotopic Reference Material |
| ERL | Electronic Reference Library |
| ODR | Optical Digital Reference |
| PREP | Power-PC Reference Platform |
| CREF | Cross Reference [engl.] |
| CRS | Coordinate Reference System Koordinatenreferenzsystem |
| VRP | Viewing Reference Point |
| VRC | Viewing Reference Coordinate |
| IRV | International Reference Version |
| XREF | Cross Reference List |
| CR | Call Reference [engl.] Element des ISDN-Protokolls |
| CRF | Cross Reference File |
| RISM | Reference Interaction Site Model |
| MRCI | Multi Reference Configuration Interaction |
| MPRM | Mobile Payment Reference Model |
| RHNC | Reference Hypernetted Chain [Theorie] |
| RMSA | Reference [rescaled] Mean Spherical Approximation |
| BREF | Best Available Technique Reference Documents [engl.] Spezifikationen zu Emissionsgrenzwerten beim Produktionsumweltschutz [EU-Richtlinie] |
| airs | Advanced Inertial Reference Sphere |
| ARM | Annotated Reference Manual [engl.] |
| ARM | Arpanet Reference Model [engl.] |
| BRC | British Reference Council [engl.] |
| CHRP | Common Hardware Reference Platform |
| A HREF | Anchor Hypertext Reference [engl.] Link in der HTML-Datei einer Website |
| CRS | European Coordinate Reference Systems Leipzig, http://crs.bkg.bund.de/crs-eu |
| EARS | Electronic Access to Reference Services |
| IRIS | Intelligent Reference Information System |
| ICRF | International Celestial Reference Frame |
| ICRS | International Celestial Reference System |
| WRS | Wide Area Ground Reference Station |
| MRCC | Multi-Reference Coupled-Cluster [Methode] |
| ERO | Entity Reference Open delimiter [SGML] |
| CGRM | Computer Graphics Reference Model [engl.] |
| EDSRA | Earth Data System Reference Application |
| R | Radio, Real, Receive, Reference, Remote |
| IERS | International Earth Rotation and Reference Systems Service |