R
- Rubbermaid
- Rosendahl
- Ricoh
- RadioShack
- RCA
- Reed
- Regency
- Rhino
- RIDGID
- Realtree
- Rothco
- Rainbow
- Rand McNally
- Reliance
- Restoration Hardware
- Royal Albert
- Royal Doulton
- Russ
- Ryobi
- Rivera Primo
- Rode
- Rycote
- Ram Mounts
- Renthal
- Ram
- Rugged Ridge
- Roland
- ROKINON
- Rollei
- Ross
- Realist
- Revere
- Raven
- Rogue
- Reebok
- Remo
- Rico
- Roma
- Replay
- Roots
- Revo
- Roberu
- Royal
- Rayovac
- Ranger
- Rebel
- Reach
- Raytheon
- Rapid
- RiDATA
- Rosewill
- Rocketfish
- Raxxess
- RDL
- Realistic
- Rolls
- Renegade
- Renaissance
- Roundup
- Ring
- Radiant
- Rite Lite
- Rosco
- Regalo
- Reese
- Rolleiflex
- Roku
- RazBaby
- Raritan
- Rohde & Schwarz
- Radius
- Rite Aid
- RefectoCil
- Radnor
- RAVPower
- Raspberry Pi
- RPS
- Renishaw
- RIC
- Rhodes
- Rollerblade
- Rubicon
- Raymarine
- ROWI
- Rockland
- RoadHawk
- Rockville
- Recoton
- ReTrak
- Raynox
- Rodenstock
- Rokunar
- Rolev
- Reflecta
- Radiac
- Runtastic
- Red Star
- Revolution
- Roman
- RPS Studio
- ResMed
- Rimowa
- ROCCAT
- Rain
- RTI
- Retevis
- Ritron
- Rug Doctor
- Reiko
- Ritz
- Redrock Micro
- RadioPopper
- Ravelli
- Redfield
- Renata
- Recon Outdoors
- Reconyx
- Revolabs
- Rotatrim
- Royal Brites
- Red Rock
- RugGear
- Reflections
- Roxant
- RetiCAM
- ROCKER
- REMAX
- Revuenon