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 SkyWest
  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