National Knife Collectors Association
- Non-profit, for the improvement of the knife collecting experience and promoting the hobby.
- http://www.nkcaknife.org

The Knife Makers Guild
- Professional association. Member list, coming shows, forums.
- http://www.knifemakersguild.com/

M9 Bayonet Collectors Club
- Discuss history, manufacturers, and versions of M9 bayonets. Photo posting, events calendars.
- http://www.m9bayonet.com

Southern California Blades Knife Collectors Club
- Group for enthusiasts and custom makers. Offers classifieds, sponsors annual Knife Expo, includes information on meetings, and dates of shows.
- http://www.scblades.com/

Australian Knife Collectors Club
- Encourages aspirations of custom knifemakers and responsible ownership. History, newsletter, open membership.
- http://www.akc.iinet.net.au/

Montana Knifemakers Association
- Non-profit educational organization to further the art of knifemaking through seminars and an annual show.
- http://www.montanaknifemakers.com

Florida Knifemakers' Association, Inc.
- Nonprofit association of custom knife makers and those interested in handmade knives.
- http://www.floridaknifemakers.org/

The American Knife and Tool Institute
- Promotes public awareness, monitors legislation and encourages responsible law enforcement.
- http://www.akti.org/

The American Bladesmith Society
- Dedicated to teaching and promotion of the forged blade. Operates bladesmithing schools, lists trade shows.
- http://www.americanbladesmith.com/