The list of government acronyms and abbreviations.

All government related acronyms and abbreviations.

12
IRS:
Internal Revenue Service(Us taxes, US business, Response)
12
CIO:
Chief Information Officer(Us taxes, NeWS, Information Systems)
12
NEPA:
National Environmental Policy Act(Nature, Transportation planning)
12
NRL:
Naval Research Laboratory(RESEARCH, Celestial objects, Astronomy)
11
ARPA:
Advanced Research Projects Agency(Computers, Computer Security, Computer)
11
NIMA:
National Imagery and Mapping Agency(Army, Government, Military)
11
NTIS:
National Technical Information Service(Us taxes, Taxation, TAX)
11
ONR:
Office of Naval Research(Military engineering, Naval, Meterology)
11
USAF:
United States Air Force(Nation ship prefix, Military law, Ship name)
11
GIS:
Geographic Information Systems(Transportation planning)
11
IAEA:
International Atomic Energy Agency(Nuclear Physics, Nuclear Technology)
11
USPTO:
United States Patent and Trademark Office(Intellectual Property)
10
BMDO:
Ballistic Missile Defense Organization(Army, Government, Military)
10
CNO:
Chief of Naval Operations(Military law, United States Navy, Us navy)
10
ORNL:
Oak Ridge National Laboratory(Power, Energy, Government)
10
SBA:
Small Business Administration(Governmental, Central, Administration)
10
ATSDR:
Agency for Toxic Substances and Disease Registry(Health, Air Force)
10
NCI:
National Cancer Institute(Cancer, Prostate Cancer, Oncology)
10
SBIR:
Small Business Innovation Research(RESEARCH, Air Force, Army)
9
ADA:
Americans with Disabilities Act(Transportation planning)
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ChicagoSmart Define. 2018. "government" http://smartdefine.org/government/abbreviations/r (accessed September 29, 2026).
HarvardSmart Define 2018, government, Smart Define, viewed 29 September, 2026, <http://smartdefine.org/government/abbreviations/r>.
MLASmart Define. "government" 14 February 2018. Web. 29 September 2026. <http://smartdefine.org/government/abbreviations/r>