Quad City Linux Users Group
- Linux Users in the Quad Cities of Iowa and Illinois (Davenport, Moline, Bettendorf, Rock Island).
- http://www.qclug.org/

Ames Free Unix Group
- Unix and Open Source enthusiasts group in Ames, Iowa. It works to promote all varieties of open source software, including the many varieties of free Unix such as Linux, FreeBSD, NetBSD, and OpenBSD.
- http://www.amesfug.org/

Central Iowa Linux Users Group
- A group of Linux and other free Unix enthusiasts located in central Iowa. Meetings are held in Des Moines.
- http://www.cialug.org/

CedarLUG
- The Cedar Valley Linux Users Group.
- http://www.cedarlug.org/