Saekodive

Salvas

Salvo

San-O-Sub (SOS)

Saturn

Schick

Scott

Scubamaster

Scubamax

Scubapro

Scubatec

Sea Bee - Brand by Airdive

Sea Breathe

Sea Elite

Sea Hornet

Sea Horse

Sea Horse

Sea Sport

Sea Turtle

Seaira - Brand by IDI

Seac Sub

Seamless

Seapro

Sears

Seaquest

Seaway

Secoba

Seemann Sub

Sensiveair

Sepadiver

Sherwood

Siebe Gorman

Sopras Sub

Souplair - Brand by Espadon

Spartan - Brand by Tillbrook

Spiro Sub

Spora Sub

Sportsways

Starfrance

Sterling

unknown

Subacqua

Subagua

Sub Aquatics System (SAS)

Subastar - Brand by Starfrance

Submarex

Submarine Products

Submariner

Submersible Systems Inc. (SSI)

Supreme Divers of Canada

Suunto

Survivair

Swimaster