• WATERS CORPORATION
• WIDA - Waterford Intellectual Disability Association
• WP Engine (US)
• Walkers
• Wallace Myers International
• Walters People
• Ward Personnel Ltd
• Wasdell Group - Wasdell Packaging Group
• WaterWipes (Irish Breeze)
• Waterford Institute Of Technology
• Wayfair LLC
• Web Summit
• Webdoctor.ie

• Webrecruit
• Weener Plastics Ltd
• Wellington Professional Recruitment
• Wells Fargo & Company
• West Pharmaceutical Products Ireland
• West Wood Club - West Wood Club limited
• WestRock group
• Westbourne IT Global Services
• Westcare Homecare Ltd.
• Western Care Association
• Westerwood Global
• Westgrove Hotel
• Westport Hotel Group

• Westport Woods Hotel
• White Edge Garden Construction
• Wicklow Arms
• Wildlands
• William Fry
• Willis Towers Watson
• Windmill Healthcare
• Windsor Motor Group
• Winthrop Engineering & Contracting Ltd
• Winthrop Technologies
• Wipro Limited
• Wisetek
• Wix

• Wolfgang Digital
• Woodbrook Care
• Work Fusion
• Workday, Inc
• Workhuman
• World of Tiles
• Wow Burger - Dollard & Co Building
• Wrk Wrk
• Wtw
• WuXi Biologics Ltd.