Chicago Area Informix User Group
- Chicago-based Informix user group.
- http://www.chiug.org/

Informix User Group of Colorado
- Meets quarterly in the Denver area for training members in the use of Informix products and related technologies as well as keeping members current on the newest technologies.
- http://www.iiug.org/~usa_colorado/iugoc.html

Washington Area Informix Users Group
- WAIUG is an organization for users of Informix database software and tools. The group primarily serves the Washington DC, Virginia, and Maryland areas but also has members from all over the USA.
- http://www.iiug.org/~waiug/

Utah Informix Users Group
- Gives end users of Informix database server and application tools an opportunity to exchange ideas, techniques and information on how to better use existing Informix products and plan for future product releases.
- http://www.iiug.org/~uiug/

North Texas Informix Users Group
- Dallas based Informix user group with focus on exchanging ideas and assisting one another in all areas of Informix database engines and tools.
- http://www.iiug.org/~ntiug/

Central Texas Informix Users' Group
- Austin based Informix user group.
- http://www.iiug.org/~ctiug/

Informix Northern Ohio User Group
- INOUG provides a forum for users and developers of Informix based products to exchange ideas, techniques and information on how to better utilize existing products and plan for future product installations.
- http://www.iiug.org/~inoug/

Southeast Informix Users Group
- SEIUG is an Atlanta, Georgia, based Informix users group for the Southeast US.
- http://www.iiug.org/~seiug/

Michigan Informix Users Group
- Non-profit organization that was developed to meet the needs of the Michigan Informix Community. We meet bi-monthly (every odd-numbered month) in the metro Detroit area.
- http://www.miug.com/

Arizona Informix User's Group
- AZIUG is a Phoenix-based Informix user's group.
- http://www.iiug.org/~aziug/

South Florida Informix Users Group
- SFIUG is a group of people in Ft. Lauderdale and the surrounding area who meet with the common interest in Informix Software products and services.
- http://www.iiug.org/~sfiug/

International Informix Users Group
- IIUG is a global organization dedicated to enabling the transfer of information between the community of Informix customers and Informix Software.
- http://www.iiug.org/