Sabre Safemark Systems
  Safeway Safety Step Sage Hospitality
  Sage Restaurant Group Sakura
  SaleCycle SalesAndCatering.com
  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