Sabre Safemark Systems
  Safeway Safety Step Sage Hospitality
  Sage Restaurant Group Salisbury Moore
  San Diego State University Sandals Resorts
  Sandalwood Sandman Hotel Group
  Sands Regent Santa Catalina Island Company
  Savannah Ashcroft Save Your World
  Savoy SB Architects
  sbe Scandic
  Sceptre Sceptre Hospitality Resources
  Scout Hotels Screen Pilot
  Search Engine Strategies Seatrade Global
  SellMyTimeshareNow.com SendTec
  Seventh Art Media Shaner Hotel Group
  Shaner Hotels Shangri-La
  Sheraton Hotels SHG Consulting
  Shimao Group Shinta Mani Institute of Hospitality
  Sholodge 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
  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
  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
  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
  Stormont 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 Swissôtel
  Swisscom Hospitality Services Swoboda Hospitality Specialist
  Syntryx SynXis