Brands
- Hollco
- Homeij
- Hong Kong
- Honmamon
- Hopalong Cassidy
- Hornet
- Houwa
- Howa
- HR
- HTM
- Hurricane
- I.C.Cut
- IC Cut
- IC.Cut
- Idaho Knife Works
- Ideal's Defender
- Imai
- Imax
- Imperial
- Imperial Prov
- Imperial Prov RI USA
- Inagaki
- India
- Indian Ridge
- Inox
- Inter
- IPCO
- IRBI Knives
- IXL
- J&D Tool Co
- Jackeroo
- Jaguar
- Jake Hoback
- Jantz
- Japan
- Japan Cleaver
- Japan Custom
- Jeff Murison
- Jeff White
- Jensen
- John EK
- John Nelson
- Johnny Mack Brown
- Jowika
- Joy
- JPCD
- JUNGLEE
- Jyubei
- K Mark
- K.T. Cutler
- Ka-Bar
- Kabar
- Kagayaki
- Kai
- Kai Cut
- Kaicut
- Kakuri
- Kane Cutlery
- Kanetsugu
- KANETSUGU PRO-S
- Kanetsune
- Kanger
- Kassnar
- Kato
- Katz
- Kauffman
- Keith Murr
- Ken Richardson
- Kent
- Kershaw
- Keshaw
- KHYBER
- Kiffe
- Kiku Knives
- Kikusui
- Kim
- Kinryu
- Kissing Crane
- KitchenAid
- Klaas
- Klaas Robi
- Klein
- Klein Tools
- Klotzli
- KnifeGuys
- Knifeware
- Knight's Armament
- Knights Elements
- Knives of Alaska
- Koji Hara
- Kondo
- Kopromed
- Krusius
- Kutmaster
- Kutmaster Ulster
- Kvernelands
- Kwik
- Kyocera
- Lakota
- Lansky Sharpeners