The Assassins' Guild   2 members
The Assassins' Guild (Black Widow House)   41 members
The Assassins' Guild (Cobra House)   28 members
The Assassins' Guild (Raven House)   25 members
The Assassins' Guild (Scorpion House)   31 members
The Assassins' Guild (Tree Frog House)   28 members
The Assassins' Guild (Viper House)   25 members
The Hashishim   49 members
The Mano Rossa   36 members
The Ninja   75 members
The priesthood of Fish   77 members
The priesthood of Gapp   40 members
The priesthood of Gufnork   84 members
The priesthood of Hat   50 members
The priesthood of Pishe   243 members
The priesthood of Pishe (excommunicated)   1 members
The priesthood of Sandelfon   58 members
The priesthood of Sek   85 members
The Cutpurses of the Thieves' Guild   246 members
The Muggers of the Thieves' Guild   95 members
The Prowlers of the Thieves' Guild   73 members
The Safecrackers of the Thieves' Guild   32 members
The Smugglers of the Thieves' Guild   37 members
The Ankh-Morpork Palace Guard   100 members
The Djelian Guard   8 members
The Duchess Saturday's Musketeers   26 members
The Hublandish Barbarians   45 members
The Hunters   48 members
The Imperial Guard   20 members
The Klatchian Foreign Legion   16 members
The Lancre Highland Regiment   42 members
The Samurai   65 members
The Weapon Masters' Court   94 members
The Warriors' Guild   2 members
The Ancient and Truly Original Brothers of the Silver Star   56 members
The Ancient and Truly Original Sages of the Unbroken Circle   178 members
The Ancient Order of the Dynastic Crescent   3 members
The Ancient Order of the Scintillating Scarab   7 members
The Black Wizards   24 members
The Blue Wizards   10 members
The Brown Wizards   4 members
The Green Wizards   9 members
The Grey Wizards   10 members
The Hoodwinkers   50 members
The Last Order   21 members
The Octarine Wizards   4 members
The Order of Midnight   51 members
The Red Wizards   35 members
The Sages of the Unknown Shadow   45 members
The Venerable Council of Seers   51 members
The White Wizards   40 members
Mrs. Widgery's Lodgers   172 members
The Wizards' Guild   56 members