Sabre Safemark Systems
  Safeway Safety Step Sage Hospitality
  Sage Restaurant Group Sakura
  SaleCycle Salisbury Moore
  San Diego State University Sandals Resorts
  Sandalwood Sandman Hotel Group
  Sands Regent Santa Catalina Island Company
  Santo Maris Oia Savannah Ashcroft
  Save Your World Savoy
  SB Architects sbe
  Scandic Sceptre
  Sceptre Hospitality Resources Scout Hotels
  Screen Pilot Search Engine Strategies
  SearchWide Seatrade Global
  SellMyTimeshareNow.com SendTec
  ServingIntel Seventh Art Media
  Shaner Hotel Group Shaner Hotels
  Shangri-La Sheraton Hotels
  SHG Consulting Shimao Group
  Shinta Mani Institute of Hospitality Sholodge
  Shred-it Shutgun
  Sierra Suites Sigma Sourcing
  Silver Companies Silverleaf Resorts
  SilverNeedle SimpliFlying
  Simply Marvellous Media Sino Group
  Site59 SiteMinder
  Six Continents Six Senses
  Sixty Hotels Skoosh.com
  Skyscanner Sleep Inn
  SLS Hotels Small Luxury Hotels Of The World
  Smart Systems International Smartotels Hospitality International
  Smorgie Snow and Associates
  Social Tables Sodexho
  Sofitel SoftCafe
  Softscribe Software Strategy
  Sojern Sol Melia
  Solare Hotels Somera
  Sonesta International Hotels Sonnenblick-Eichner Company
  Sonnenblick-Goldman SoTHERLY
  Sotherly Hotels Sotopia
  Southwest Airlines SpaBooker
  SpaFinder Spatality
  Special Hotels of the World Splendia
  Sports Resorts International Spring Engage
  SpringHill Suites SRC Software
  SRS-WORLDHOTELS St Christopher's Inns
  St. Regis STAAH
  Starbucks StarCite
  Starfleet Research Stark Service Solutions
  Starkey International Starwood
  Starwood Capital Group Stash Hotel Rewards
  State of the Art Enterprises Station Casinos
  Stay Systems Stay Wanderful
  Staybridge Suites StayNTouch, A Shiji Group Brand
  StayOnline SteakHouseFinder.com
  Steigenberger Hotels and Resorts Stein Hotels and Resorts
  Steiner Leisure Stem Inc.
  Stephen Guth StepStone Hospitality
  Steptoe & Johnson LLP Sterling
  Steven Ferry Stevens Travel Management
  Stites & Harbison Stonyford Group
  Storacall TeleAcoustics Stormont Hospitality Group
  STR STR Analytics
  STR Global StraightupTraveler.com
  Strategic Hotel Capital Strategic Hotels
  STSN Stuart Dean
  Suburban Franchise Suite Spa
  SuiteLinq SuiteSpeed
  Summit Hotel Properties Summit Views
  Sun-Star Group Sunburst
  Sunstone Sunterra
  Sunwing Super 8
  Sustainable Travel International Sutherland Global Services
  Swiss International Swissôtel
  Swiss-Belhotel International Swisscom Hospitality Services
  Swoboda Hospitality Specialist Syntryx
  SynXis