Northeast IBM AS/400 User Group
- Group in the northeastern states of the US. Details of the annual conference.
- http://www.neugc.org/

NHMUG
- New Hampshire Midrange User Group.
- http://www.nhmug.org/

AITP
- Providing leadership and education in Information Technology. Providing education and benefits to members and working with the industry to assist in the overall promotion and direction of Information Technology.
- http://www.aitp.org/

Pacific Midrange Systems Association
- PMSA is an IBM iSeries (AS/400) users group for the Seattle and Puget Sound region.
- http://www.pacificmidrange.org

LANSA Group
- Bringing together LANSA Developers to share ideas, tips and tricks.
- http://groups.yahoo.com/group/lansa2/

WAM
- Washington Area Midrange.
- http://www.wash-midrange.org/

TMUG
- The Triangle Midrange User's Group serves the Research Triangle area of Raleigh, Durham, and Chapel Hill, North Carolina.
- http://www.trianglemidrange.org/

TSMUG
- Tri State Midrange User Group, Cincinnati, Ohio.
- http://www.tsmug.org/

Central Florida Midrange Users Group
- AS/400 Midrange users group.
- http://www.cfmug.org

VT/NY AS/400 User Group
- Members in Vermont, up-state New York, New Hampshire, Massachusetts; meetings 9x/year.
- http://www.vtmug.org/

The Omni User
- The Omni User is Chicagoland's largest and oldest association of computer users. We specialize in the IBM midrange platform and associated computing devices including local area networks.
- http://www.omniuser.org/

OCEAN
- The Orange County Educational Advancement Network, Inc. user group is one of the largest IBM Midrange user groups in the western states.
- http://www.ocean400.org/

NES
- New England Systems Inc.
- http://nesysinc.com/

MUMM
- Midrange Users of Mid-Michigan is a user group committed to sharing information and exploring the various areas surrounding the AS/400.
- http://www.ismi.net/mumm/

MUGWNY
- The Midrange Users Group of Western New York is a non-profit organization comprising professionals working in the Midrange Systems environment.
- http://www.mugwny.org/

LISUG
- Long Island Systems User Group
- http://www.lisug.org/

IGNITe-400
- The International Group for Networking, Internet Technologies, and E-business on the AS/400 is dedicated to the world wide implementation of e-Business and e-Commerce applications via IBM's AS/400.
- http://www.ignite400.org/

IBM CUA UK
- United Kingdom Computer Users Association.
- http://www.ibm-cua.org.uk/

FASUG
- The Fairfield Connecticut AS/400 User Group is a not-for-profit organization whose principle objective is to advance the effective use of IBM AS/400 computers.
- http://www.fasug.org/

SNUG
- Founded over 10 years ago, SNUG has been serving the South Florida area with AS/400 presentations, activities, and networking opportunities.
- http://www.snug.cc/

TUG
- Toronto Users Group.
- http://www.tug.on.ca/

ASUG
- Application Systems Users Group of Greater Cleveland.
- http://www.asugcle.com/

Common
- International professional association, serving the global community of organizations and individuals who have an interest in IBM-related technology.
- http://www.common.org/

CNY400UG
- Central New York AS/400 User Group.
- http://www.cny400ug.org/

ASG
- Application Systems Group is the IBM Midrange user group for the San Diego area. The purpose of the group is to advance the knowledge and skills of those responsible for using the IBM Midrange family of computers
- http://www.asg400.org/