Brands
- Richartz
- Richmond
- Ridge Runner
- Rigid
- RK
- RLH
- RLH 700
- RMEF
- Robeson
- Robeson Shur Edge
- Rock Island Arsenal
- Rocky Lane
- RODGERS
- Rollock
- Rostfrei
- Rostrei
- Rough Rider
- Roy Rogers
- RRR
- Ru-Ko
- Ruana
- Ruger
- Rugged
- Ruko
- Russell
- S Klein
- S M
- S. M. Z.
- S.W. Cut
- SA
- SAB
- Sabatier
- Sabre
- Sack-Ups
- Sacks-Ups
- SAKAI TAKAYUKI
- Sakon Shiraume
- Sam McDowell
- Samuel Wragg
- San Francisco Gun Exchange
- Santa Fe Stoneworks
- Sarco
- Satake
- SBO
- Scale Mead
- ScaleMead
- Schatt & Morgan
- Schatt & Morgan Cutlery Co.
- 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
- Shoceram 21
- 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