US Military and State Abbreviations and Acronyms
- Contains terms and aircraft designations for all military branches.
- http://www.globemaster.de/html/dictionary.html

DOD Dictionary
- US Defence Department master database.
- http://www.dtic.mil/doctrine/jel/doddict/acronym_index.html

Tech-Writer.net - Aerial Reconnaissance and Imagery Analysis Acronyms
- Mostly military terms.
- http://www.tech-writer.net/arandiaacronyms.html

USAAF Abbreviations
- Glossary of terms used in the United States Army Airforces.
- http://www.warbirdsresourcegroup.org/URG/glossary.html

United States Navy Patrol Squadrons
- Glossary of acronyms and terminology.
- http://www.vpnavy.com/vpnavy_glossary.html

Space and Electronic Warfare Lexicon
- Acronyms and terms relating to space, computers, and related technologies. Most terms have source citations.
- http://www.sew-lexicon.com/

Military Acronyms, Initialisms and Abbreviations
- Indexed online database of military shorthand terms.
- http://www.fas.org/news/reference/lexicon/acronym.htm

Military Acronyms
- An alphabetical database.
- http://www.dtmedia.co.uk/a.htm