Brands
- Sharp
- Sharpening Rod
- Sheath
- Sheaths
- Shelham
- Shergrip
- Shibazi
- Shimano
- Shun
- Sid Latham
- Silky
- Silver Knight
- SK
- Skachet
- Skoz
- Slysteel
- Smith & Wesson
- Smith and Wesson
- Smoky Mountain
- Snap On
- Snap-on
- SNP
- SOG
- Solar
- Solingen
- SOS
- Spokane Leather
- Spouting Whale
- Spyderco
- SS-Cut
- Stainless Japan
- Standing Stone Cutlery
- Stanley Rogers
- Star
- Steer
- Steve Jernigan
- Stidhams Knives
- Style
- SureFire
- SVORD
- Swamp Fox
- Swan
- Swanner
- Swanner Cut Co.
- Swiss Army
- Switzerland
- Synanon
- T.S. Corp
- Taiwan
- Taiyo
- Tak
- Tak Blade
- Tak Fukuta
- Takeshi Saji
- Tako
- Tarani
- TASCO
- Tatou
- Taylor Cutlery
- Taylor Seto
- Taymor
- Technicraft
- Terryberry
- Theater
- Things Remembered
- Thommes Diving
- Tiger
- Tim Holt
- Timberline
- Tom Buckner
- Tom Mix
- Tomcat
- TOP
- Trim
- Tropicana
- Tru-Bal
- Tsuge
- Uline
- Ulster
- UMC
- Unbranded
- Unisus
- United
- United Cutlery
- Unknown
- Unmarked
- US
- USA
- USMA
- USN
- Utica
- Valiant Armoury
- Vallotton/Clark
- Valor
- Vanadium
- Vernco
- Victorinox
- Vilco
- Virginia
- Virginia Rostfrei