• WIDA - Waterford Intellectual Disability Association
• WIndward Management
• Wallace Myers International
• Walsh Waste
• Ward Personnel Ltd
• Wayfair LLC
• Wayflyer
• Webdoctor.ie

• Webrecruit
• Weener Plastics Ltd
• Wellington Professional Recruitment
• Wells Fargo & Company
• West Pharmaceutical Products Ireland
• West Wood Club - West Wood Club limited
• Westbourne IT Global Services
• Westcare Homecare Ltd.

• Western Care Association
• Westgrove Hotel
• Wexford Car Centre
• Wgnstar
• White Sands Hotel
• Wicklow Arms
• Willcox Matthews Ltd
• William Fry

• Windmill Healthcare
• Winthrop Technologies
• Wipro Limited
• Woodbrook Care
• World of Tiles
• Wrk Wrk
• WuXi Biologics Ltd.