• SAP Software Solutions
• SCL Sales Ltd
• SGS Ireland
• SMT Fund Services(Ireland) Ltd
• SONAS RECRUITMENT
• SRG Engineering
• STL Logistics Limerick
• SYNCHRO
• Sabeo Technologies Ltd
• Saint John of God Community Services
• Sam Dennigan & Co.
• Sanderson Recruitment
• Sandymount Hotel
• Sanmina Corporation
• Savills Ireland
• Seafield Hotel & Spa Resort
• Securitas Security Services Ireland
• Shearwater Hotel
• Sheraton (Marriott International, Inc.)
• Sherlock Recruitment Ltd
• Sidetrade SA
• Sigmar Recruitment - Sigmar Recruitment Consultants
• Skechers Ireland
• Skillfinder International
• Sky Handling Partner
• Slieve Russell Hotel
• Smiles Dental (Xeon Dental Services Limited)
• Smyths Toys HQ UC
• Sodexo
• Solas Consulting Group
• Specsavers Optical Group Limited
• Speedy Asset Services
• Spencer Hotel Dublín City
• Sports Direct
• Sports Surgery Clinic
• St Michael's House
• St Patrick’s Mental Health Services (SPMHS)
• St. Catherine's Association
• St. James Hospital Foundation
• St. Vincent's Private Hospital
• St. Vincent's University Hospital
• Stack and.co
• Stacks Pharmacy Group
• Staffline Group PLC
• Starbucks Ireland
• Staycity Aparthotels Ltd
• Stelfox It Recruitment
• Stericycle, Inc.
• Stryker
• Sunbeam Media
• Suretank Group
• Susquehanna International Group, LLP