Computer Users Group of Yokota
- Group based in Yokota, hosting regular LAN parties. Contact details, news, pictures and joining information.
- http://www.cugy.net/

Ringo Mac User's Group
- An English language Macintosh user group in Tokyo. Holds monthly meetings and supports an active online BBS.
- http://www.ringo.net/

Kinki Mac Users Group
- A non-profit all-volunteer organization for users of Macintosh computers to get together and help each other learn more about their computers.
- http://www.kmug.org/

International Computer Association
- Forum that enables professionals to exchange business-related technology news and provides members an opportunity to meet each other. Based in Tokyo.
- http://www.icajapan.jp/

Tokyo PC Users Group
- Japan's largest English-speaking personal computer club, with a particular interest in bilingual personal computing.
- http://www.tokyopc.org/