This is a list of notable computer users' groups categorized by interest.
General
- Chaos Computer Club
- Computer Measurement Group (CMG)
- ComputerTown UK
- Homebrew Computer Club
- Port7Alliance
Hardware platforms
- Adamcon (Coleco Adam user group)
- Toronto PET Users Group (TPUG)
- SHARE
- Macintosh User Groups in the UK
- DUsers, the first Macintosh users group, based at Drexel University
- IIUG International Informix Users Group
- COMMON for Power Systems (IBM i, AS/400, iSeries, System i, AIX and Linux) users in North America.
Linux
- Bangalore Linux User Group
- Beijing GNU/Linux User Group
- Linux Users' Group of Davis
- ILUG-Delhi
- Lanka Linux User Group
- Linux Australia
- Linux Users of Victoria
- LinuxChix
- Loco team
- NYLUG
- Portland Linux/Unix Group
- RLUG
- SEUL
- Southern California Linux Expo