• SGS Ireland
• SISK Healthcare
• SL Controls
• SRG Engineering
• STL Logistics Limerick
• SUSE Linux GmbH
• Salthill Hotel
• Sam Dennigan & Co.
• Sandymount Hotel
• Savills Ireland
• Schneider Electric
• Schoolhouse Hotel
• Seafield Hotel & Spa Resort

• Servier Industries
• Shannon Springs Hotel
• ShareRidge Ltd
• Shay Murtagh Precast Concrete Solutions
• Shearwater Hotel
• Sheehy Motor Group
• Shopify
• Siemens
• Silverback Staffing Ltd
• Skechers Ireland
• Sky Handling Partner
• Slack Technologies
• SmartBear Software

• Smiggle UK
• Social Talent
• Sojern - Travel's Direct Demand Engine
• Sonas Bathrooms
• Sonas Nursing Home
• Special Olympics Ireland
• Speedy Asset Services
• Spencer Hotel Dublín City
• Spirit Motor Group
• Sports Direct
• Sports Surgery Clinic
• Spring Framework
• St Michael's House

• St. Catherine's Association
• St. Michael's Hospital
• St. Vincent's Private Hospital
• Stack and.co
• Starbucks Ireland
• Staycity Aparthotels Ltd
• Suir Engineering
• Superdrug Stores
• Superdry
• Superior Express Ltd
• Suretank Group
• SurveyMonkey
• Swissport International