GAISF
Global Association of International Sports Federations
GC
Gymnastics Canada
GEMA
German Performing Rights Society
GHSA
Georgia High School Association
IAAF
International Association of Athletics Federations
IABA
Irish Athletic Boxing Association
IAJE
International Association for Jazz Education
IAPP
International Association of Privacy Professionals
IATA
International Air Transport Association
IBA
International Boxing Association
IBSF
International Bobsleigh and Skeleton Federation
IBU
International Biathlon Union
ICF
International Canoe Federation
ICF
International Chess Federation
ICOE
International Center for Orthopaedic Education
IEEE
Institute of Electrical and Electronics Engineers
IET
Institution of Engineering & Technology
IFAF
International Federation of American Football
IFSC
International Federation of Sport Climbing
IHFA
Irish Handball Federation Association
IHI
Institute for Healthcare Improvement
IHO
International Hydrographic Organization
IIHF
International Ice Hockey Federation
IJF
International Judo Federation
IJSBA
International Jet Sports Boating Association
ILAC
International Laboratory Accreditation Cooperation
IMechE
Institution of Mechanical Engineers
IMMAF
International Mixed Martial Arts Federation
INCOSE
International Council on Systems Engineering
IOC
International Olympic Committee
IOM
Institute of Medicine
IPSF
International Pole Sports Federation
IRB
International Rugby Board
IRIS
Interns & Residents Information System
IRTE
Institute of Road Transport Engineers
ISA
International Surfing Association
ISAF
International Sailing Federation
ISC2
International Information System Security Certification Consortium
ISF
International Softball Federation
ISF
International Skateboarding Federation
ISMF
International Ski Mountaineering Federation
ISO
International Organization for Standardization
ISOC
Internet Society
ISPAD
International Society for Pediatric and Adolescent Diabetes
ISSA
International Surfing Association
ISSS
International System Safety Society
ISU
International Skating Union
ISU
International Skating Union
ITF
International Tennis Federation
ITTF
International Table Tennis Federation
IUAES
International Union of Anthropological and Ethnological Sciences
IWF
International Weightlifting Federation
IWF
International Wrestling Federation
JALC
Jazz at Lincoln Center
JBA
Japanese Baseball Association
JC
Joint Commission
JGA
Junior Golf Association
JJA
Jazz Journalists Association
JPBPA
Japanese Professional Baseball Players Association
JRGOS
J. Robert Gladden Orthopaedic Society
LCCR
Leadership Conference on Civil Rights
LCME
Liaison Committee on Medical Education
LFA
Lithuanian Football Association
LLRS
Limb Lengthening and Reconstruction Society
LTA
Lawn Tennis Association
MCSA
Maritime Canoe and Surfing Association
MedCAC
Medicare Evidence Development and Coverage Advisory Commission
MedPAC
Medicare Evidence Development and Payment Advisory Committee
MGMA
Medical Group Management Association
MORE
Media Orthopaedic Reporting Excellence (Awards)
MPAA
Motion Picture Association of America
MRI/JMA
Meteorological Research Institute / Japan Meteorological Agency
MSSP
Medicare Shared Savings Program
MSTS
Musculoskeletal Tumor Society
NAB
National Association of Broadcasters
NABEF
National Association of Broadcasters Education Foundation
NABOB
National Association of Black Owned Broadcasters
NABPAC
National Association of Broadcasters Political Action Committee
NAHB
National Association of Home Builders
NAJE
National Association of Jazz Educators
NARAS
National Academy of Recording Arts and Sciences
NASA
Network Affiliated Stations Alliance
NASBA
National Alliance of State Broadcast Associations
NASCAR
National Association for Stock Car Auto Racing
NASS
North American Spine Society
NATPE
National Association of Television Program Executives
NBME
National Board of Medical Examiners
NBOME
National Board of Osteopathic Medical Examiners
NCAA
National Collegiate Athletic Association
NCQA
National Committee for Quality Assurance
NCTA
National Cable & Telecommunications Association
NDIA
National Defense Industrial Association
NEA
National Endowment for the Arts
NERC
North American Electric Reliability Corporation
NFHS
National Federation of State High School Associations
NHSC
National Health Service Corps
NMS
National Matching Services
NOLC
National Orthopaedic Leadership Conference
NPF
National Pro Fastpitch (defunct)
NRMP
National Resident Matching Program