Brands
- Sakon Shiraume
- Sam McDowell
- Samuel Wragg
- San Francisco Gun Exchange
- Santa Fe Stoneworks
- Sarco
- Satake
- SBO
- Scale Mead
- ScaleMead
- Schatt & Morgan
- Schlieper
- Schrade
- Schrade Old Timer
- Schrade Uncle Henry
- Scoop
- Scrapyard
- ScrewSaver
- Sea Buoy
- Sea-Buoy
- Sears
- SeberTool
- SEIZO IMAI
- Seki
- SEKI Cut
- Seki Japan
- Servistar
- Seto
- Shadow Tech
- Sharp
- Sharpening Rod
- Sheath
- Sheaths
- Shelham
- Shergrip
- Shibazi
- Shimano
- Shrade-Walden
- Shun
- Shure Edge
- Sid Latham
- Silky
- Silver Knight
- SK
- Skachet
- Skoz
- Slysteel
- Smith & Wesson
- Smith and Wesson
- Smoky Mountain
- Snap On
- Snap-on
- SNP
- Soffe
- SOG
- Solar
- Solingen
- SOS
- Spalding
- Spokane Leather
- Spouting Whale
- Spyderco
- SS-Cut
- Stainless Japan
- Standing Stone Cutlery
- Stanley Rogers
- Star
- Steer
- Steve Jernigan
- Stidhams Knives
- Stone
- Style
- SureFire
- Survirai?
- 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
- The Ideal
- Theater