Clan FU
Gives rules, forums, members list, information, and e-mail address to join.
Fighters of Norway [FoN]
A Norwegian CS 1.5 clan with roster, FAQ, news, forum, servers, and screenshots.
Fonzie (FnZ)
A Dutch based clan with news, poll, custom maps, members, downloads, wars, and servers.
Forgotten Realm
Australian based clan with weapon strategies, members page, wars, and links.
Fox-Hound
Romanian clan. Information on members and download section.
Frosty's Vengeance
Counter-Strike clan information, challenges, and forum.
Full Mental Jacket [FmJ]
Contains news, information, roster, and challenges.