• G4s Secure Solutions
• GAA. Gaelic Athletic Association
• GCL Group
• GMC Utilities Group
• GOTR Projects Ltd - Dublin Nails
• GPC - Global Product Classification
• GPC - Global Professional Consultants
• GPC Finance - Global Professional Consultants
• GSW Solutions

• Gaia Talent
• Galetech Group
• Galway Simon Community
• Gen Tech Specialist Recruitment
• Genesys Telecommunications Laboratories, Inc.
• GerTEK Solutions
• Gheel Autism Services
• Gi Group ETT
• Gino's Gelato

• Glashaus Hotel
• Glenman Corporation
• Glennon Brothers
• Glenveagh Properties PLC
• Global Payments
• Go 2 Recruit
• Goodman Masson Limited
• Grace Healthcare
• Grand Hotel, Malahide, Limited

• Great National Hotels & Resorts
• Green DCBM Ltd
• Greg O'Hanlon International Ltd
• Grifols
• Grosvenor
• Guidant Global