| adrc | Asteroid Deflection Research Collaboration |
| aem | Agencia Espacial Mexicana |
| aida | Asteroid Impact and Deflection Assessment |
| asat | Anti-Satellite Weapons |
| ase | Association of Space Explorers |
| asi | Agenzia Spaziale Italiana |
| atap | Asteroid Threat Assessment Project |
| au | Astronomical Units |
| Belspo | Belgian Federal Science Policy Office |
| cafs | Close-Encounter Fact Sheet |
| Caltech | California Institute of Technology |
| cil | Customary International Law |
| cneos | Center for neo Studies |
| cnes | Centre national d’études spatiales |
| cnsa | China National Space Administration |
| cs | Canadian Space Agency |
| css | Catalina Sky Survey |
| damien | Detecting and Mitigating the Impact of Earth-bound Near-Earth Objects |
| dart | Double Asteroid Redirection Test |
| destiny+ | Demonstration and Experiment of Space Technology for Interplanetary Voyage Phaethon Flyby Dust Science |
| dlr | Deutsches Zentrum für Luft- und Raumfahrt |
| drdc | Defence Research and Development Canada |
| dsi | Deep Space Industry |
| eadp | Emergency Asteroid Defence Project |
| echr | European Court of Human Rights |
| ecsl | European Center for Space Law |
| esa | European Space Agency |
| eso | European Southern Observatory |
| fema | Federal Emergency Management Agency |
| ffg | Österreichische Forschungsförderungsgesellschaft |
| haiv | Hypervelocity Asteroid Intercept Vehicle |
| iaa | International Academy of Astronautics |
| iadc | Inter-Agency Space Debris Coordination Committee |
| iaea | International Atomic Energy Agency |
| iau | International Astronomical Union |
| iawn | International Asteroid Warning Network |
International Court of Justice |
|
| iciss | International Commission on Intervention and State Sovereignty |
| idpag | Impact Disaster Planning Advisory Group |
| ieo | Inner Earth orbit Object |
| iisl | International Institute of Space Law |
| ilc | International Law Commission |
| isa | Israel Space Agency |
| isc | International Science Council |
| iss | International Space Station |
| jaxa | Japan Aerospace Exploration Agency |
| jpl | Jet Propulsion Laboratory |
| jsga | Japan Spaceguard Association |
| kasi | Korea Astronomy and Space Science Institute |
| linear | Lincoln Near-Earth Asteroid Research |
| leo | Low Earth Orbit |
| lsa | Luxemburg Space Agency |
| lsc | Legal Subcommittee |
| lwg | Legal Working Group |
| maog | Mission Authorization and Oversight Group |
| moid | Earth Minimum Orbit Intersection Distance |
| mpc | Minor Planet Center |
| nasa | National Aeronautics and Space Administration |
| nato | North Atlantic Treaty Organization |
| nea | Near-Earth Asteroid |
| nec | Near-Earth Comet |
| ned | Nuclear Explosive Device |
| neo | Near-Earth Object |
| neomap | Near-Earth Object Mission Advisory Panel |
| neoo | Near-Earth Object Observations |
| neosm | Near-Earth Object Surveillance Mission |
| NEOSSat | Near Earth Object Surveillance Satellite |
| neowise | Near-Earth Object Wide-Field Infrared Survey Explorer |
| NNWS | Non-Nuclear-Weapon State |
| noaa | National Oceanic and Atmospheric Administration |
| npd | nasa Policy Directive |
| nitep | Near-Earth Object Impact Threat Emergency Procedures |
| nstc | United States National Science and Technology Council |
| NWS | Nuclear-Weapon State |
| ocha | Office for the Coordination of Humanitarian Affairs |
Origins, Spectral Interpretation, Resource Identification, Security- Regolith Explorer |
|
| ostp | Office of Science and Technology Policy |
| R2P | Responsibility to Protect |
| rosa | Romania Space Agency |
| roscosmos | Federal Space Agency of Russia |
| Pan-starrs | Panoramic Survey Telescope and Rapid Response System |
| pdco | Planetary Defense Coordination Office |
| pha | Potentially Hazardous Asteroid |
| pierwg | Planetary Impact Emergency Response Working Group |
| procyon | Proximate Object Close flyby with Optical Navigation |
| pne | Peaceful Nuclear Explosion |
| sgac | Space Generation Advisory Council |
| smpag | Space Mission Planning Advisory Group |
| smpag LWG | smpag Ad-Hoc Working Group on Legal Issues |
| ssau | State Space Agency of Ukraine |
| stm | Space Traffic Management |
| stsc | Scientific and Technical Subcommittee |
| suparco | Space and Upper Atmosphere Research Commission |
| swf | Secure World Foundation |
| swsh | Subcommittee on Space Weather, Security, and Hazards |
| tbt | Test-Bed Telescope |
| uksa | UK Space Agency |
| UN | United Nations |
| uncopuos | United Nations Committee on the Peaceful Uses of Outer Space |
| undrr | United Nations Office for Disaster Risk Reduction |
| unga | United Nations General Assembly |
| unispace | UN Conference on the Exploration and Peaceful Uses of Outer Space |
| unl | University of Nebraska-Lincoln |
| unoosa | United Nations Office for Outer Space Affairs |
| unsc | United Nations Security Council |
| unts | United Nations Treaty Series |
| un-spider | United Nations Platform for Space-based Information for Disaster Management and Emergency Response |
| us gao | United States Government Accountability Office |
| vclt | Vienna Convention on the Law of Treaties |
| wmd | Weapons of Mass Destruction |
| wg | Working Group |