- Sabina
- Salsa
- Sandaya
- Sandos
- Santafixie
- Sarenza
- Sepiia
- Sercotel
- Shirtcity
- Shop Disney
- Shopiteca
- Shopty
- Showroomprive
- Shutterstock
- ShytoBuy
- Sinmaletas
- Sisley
- Sixt
- Sklum
- SleepAA
- Slendertone
- Smallable
- Smartbox
- Smashinn
- Snowinn
- Sobres.es
- SoloArtesanas
- SoloCruceros
- Sombreroshop
- SomosBikers
- Sotoalto
- Spartoo
- SportsShoes
- Spreadshirt
- Stellar
- Streetpadel
- StreetProRunning
- Sunglass Hut
- SuperMoments
- SuperProta
- Surfdome
- Swiminn
- Swiss