Kate Cartwright's Goddess Stamps  
   Rubber stamps, coloring books, cards and calendars. Offering more than 100 Goddess stamp images illustrated by a well-known artist.
   http://www.katecartwright.com/

Keyhole Arts  
   Offers unmounted rubber stamps, gallery, fleetings, molds, and discontinued items.
   http://KeyholeArts.com/

Kiwi Stamping of New Zealand  
   Offers rubber stamps and products made in New Zealand. The site also contains news, club pages, and a mailing list.
   http://www.kiwistamping.co.nz

KNT Designs  
   Offers unmounted stamps specializing in babies and young children.
   http://pages.ivillage.com/whitepinek/kntdesigns/