Acronym Expander, The
Acronym Finder - searchable database containing common acronyms about computers, technology, telecommunications, and the military.
Acronym Lookup
Acronym Reference List - collection of telecommunications and data-communications acronyms that are constantly being updated.
Acronyms for Health Information Resources - linked acronyms for information and data resources in the health sciences.
Acronyms of Guatemalan Organizations - siglas de organizaciones guatemaltecas.
BioABACUS - Biotechnology ABbreviation and ACronym Uncovering Service: A searchable database of abbreviations and acronyms in biotechnology.
Dog Fanciers' Acronym List - list of dog-related acronyms.
Megaterms: Military Terms and Acronyms - contains over 22,700 military terms and acronyms, complete with full text search.
Ocean Science-Related Acronyms - a searchable list of acronyms related to ocean sciences, along with their expansions and (where available) national or institutional affiliations.
Official Postal Service Abbreviations
Q Signals - comprehensive listing of international codes.
Web Directory: Acronyms, Abbreviations, and Initialisms - links to subject-specific lists of acronyms.