S
- Ski Light Edition
- SkyHigh Media
- Skywatch
- Slick & Sassy Media Ltd t/a Cuisine Magazine
- Sligo Weekender
- SMA Abacus
- Small Medium ES
- SME/Uj Szo
- Smithsonian Institution
- SNIPE
- SNOB Group
- Snowmobile North Dakota
- SNPECI
- So Press
- Sochi Olympic Village
- Social Sciences in China Press (SSCP)
- Socialter SAS
- Sociedad Editora Arroniz
- Sociedade Vicra Desportiva S A
- Societa Editoriale Domani SpA
- Societa Editrice Italiana
- Societe du Figaro
- Societe Ouest-France
- Society for the Prevention of Cruelty to Animals
- Società Editrice del Corriere del Ticino
- Société Coopérative Générations
- Société sénégalaise de presse et de publications
- Sogemedia
- Soico - Sociedade Independente de Comunicacao LDA
- Soka Gakkai
- Soka Gakkal International - USA
- Sokhan Gostar Institute
- Sonoma Index-Tribune
- Sophia Histoire et Collections
- Sophia Publications
- SOS Discriminacion Internacional
- SourceMedia
- South China Media
- South China Morning Post Publishers Limited
- South China Morning Post Publishers Ltd.
- South Florida Sun-Sentinel
- South Florida Times
- Southeast Oklahoma Library System
- Southeastern Globe Communications
- Southern Innovator Magazine
- Sovershenno Sekretno
- Sovetskaya Belorussiya
- Spa & Wellness MexiCaribe
- Spafax Airline Network
- SPCAA