| Abbott Ireland Diagnostics Division | Abbott Diagnostics Sligo |
| Abbott Ireland Ltd (Cootehill) | Abbott Nutrition Cootehill |
| Abbott Ireland Ltd (Longford) | Abbott Diagnostics Longford |
| Abbott Nutrition | Abbott Nutrition |
| Abbott Vascular Devices Ireland Ltd | Abbott Vascular Care Clonmel |
| AbbVie Clonshaugh | Contact Abbvie |
| AbbVie (Fournier Laboratories Ireland Ltd) | Airpro |
| AbbVie Ireland | Contact Abbvie |
| Abbvie Ireland (Ballytivnan) | Contact Abbvie |
| AbbVie Wesport | Contact Abbvie |
| ABP Food Group | ABP Food Group |
| Alexion AstraZeneca Athlone | Alexion AstraZeneca |
| Alkermes Pharma Ireland Ltd | Alkermes Pharma |
| Allied Irish Bank | Allied Irish Bank plc |
| Americold | Americold |
| Amgen Technology (Ireland) | Amgen in the UK and Ireland |
| Amneal Pharmaceutical | Amneal |
| Analog Devices Intl. | Analog Device Intl. |
| Apple | Apple |
| Architecture & Metal Systems | Architecture & Metal Systems |
| Arkil Ltd | Arkil |
| Arrabawn Co-op | Arrabawn Co-op |
| Arthur Cox | Arthur Cox |
| Astellas Ireland Co Ltd (Dublin) | Astellas |
| Astellas Ireland Co Ltd (Kerry) | |
| Atlantic Aviation Group | Atlantic Aviation Group |
| Aurivo Dairy Ingredients | Aurivo |
| Aviva Stadium | Aviva Stadium |
| Bank of Ireland | Bank of Ireland |
| Bausch & Lomb Ireland Ltd | Bausch & Lomb |
| Baxter Healthcare SA | Baxter Healthcare |
| BD Medical | BD |
| Becton Dickinson & Company Ltd | BD |
| Becton Dickinson Penel Ltd | |
| Bennett Construction | Bennett Construction |
| Biomarin | Biomarin |
| Birdseye (Naas) | Birdseye |
| Boliden Tara Mines Limited | Boliden Tara |
| Boormalt | Boormalt |
| Boston Scientific Ireland Ltd (Clonmel) | Boston Scientific Clonmel |
| Boston Scientific Ireland Ltd (Cork) | Boston Scientific Cork |
| Boston Scientific Ireland Ltd (Galway) | Boston Scientific Galway |
| Bristol-Myers Squibb (Cruiserath) | BMS Cruiserath |
| Bulmers Ltd | Bulmers |
| C&D Food Ltd | C&D Foods |
| Calor | Calor Gas |
| Cara Partners | Cara Partners |
| Carbery Milk Products Ltd | Carbery |
| Carey Glass | Carey Glass |
| Celestica | Celestica |
| Celtic Linen | Celtic Linen |
| Charleville Foods | Dawn Meats - Charleville Foods |
| Citi (Citibank NA Ireland Ltd) | Citi |
| College Proteins Group | College Proteins Group |
| Connolly's Red Mill | Connolly's Red Mill |
| Cook Medical | Cook Medical |
| Croke Park | Croke Park |
| Dairygold Food Ingredients (Mallow) | Dairygold Mallow |
| Dairygold Food Ingredients (Mitchelstown) | Dairygold Mitchelstown |
| Dairygold Food Ingredients (Mogeely) | Dairygold Mogeely |
| Dalata Hotel Group Plc | Dalata Hotel Group |
| Danone, Macroom | Nutiricia - Danone |
| Dalata Hotel Group | Dalata Hotel Group |
| Dawn Meats (Grannagh) | Dawn Meats Grannagh |
| Dawn Meats Ltd (Ballyhaunis) | Dawn Meats Ballyhaunis |
| Dell EMC | Dell EMC |
| Depuy (Ireland) Ltd | Depuy (Ireland) Ltd |
| Diageo Bailey's Global Supply | Diageo Bailey's Global Supply |
| Diageo Ireland (St James's Gate) | Diageo Ireland (St James's Gate) |
| DPD | DPD |
| eBay Inc | eBay |
| Edenderry Power Ltd | Edenderry Power Ltd |
| Edwards Lifesciences | Edwards Lifesciences |
| Ei Electronics | Ei Electronics |
| eir | eir |
| Electrical & Pump Services Ltd | Electrical & Pump Services Ltd |
| Element Six Ltd | Element Six Ltd |
| Eli Lilly SA | Eli Lilly SA |
| Etex Ireland | |
| European Refreshments Wexford | |
| Foyle Foods (Donegal) | Foyle Foods (Donegal) |
| Garett Advancing Motion | Garett Advancing Motion |
| GE Healthcare Ireland | GE Healthcare Ireland |
| Gilead Sciences | |
| Glanua | Glanua |
| Glanbia Consumer Foods (Ballitore) | Glanbia |
| Glanbia Consumer Foods (Drogheda) | Glanbia |
| Glanbia Ingredients Ireland (Ballyragget) | Glanbia |
| Glanbia Ingredients Ireland (Belview) | Glanbia |
| Glanbia Ingredients Ltd (Virginia) | Glanbia |
| GlaxoSmithKline (Sligo) | GlaxoSmithKline (Sligo) |
| Glen Dimplex | Glen Dimplex |
| Google Ireland | Google Ireland |
| Green Isle Foods (Portumna) | Green Isle Foods (Portumna) |
| Guerbet (Mulhuddart) | Guerbet (Mulhuddart) |
| Haleon | Haleon |
| Helsinn Birex Pharmaceuticals Ltd | Helsinn Birex Pharmaceuticals Ltd |
| Henkel Ireland Operations and Research Ltd | Henkel Ireland |
| Hollister ULC | Hollister ULC |
| Hovione | Hovione |
| IBM | IBM |
| Integer | Integer |
| Intel Ireland Ltd | Intel Ireland Ltd |
| Interxion Ireland Ltd | Interxion Ireland Ltd |
| iNua Hospitality | iNua Hospitality |
| Irish Cement Ltd | Irish Cement Ltd |
| Irish Country Meats (Camolin) | Irish Country Meats (Camolin) |
| Irish Country Meats (Navan) | Irish Country Meats (Navan) |
| Irish Dog Foods | Irish Dog Foods |
| Irving Oil Whitegate Refinery Ltd | Irving Oil Whitegate Refinery Ltd |
| J&J Vision Care Ireland | J&J Vision Care Ireland |
| Janssen Bio | Janssen Bio |
| Janssen Pharmaceutical Ltd | Janssen Pharmaceutical Ltd |
| Keelings Food Central | Keelings |
| Kepak | Kepak |
| Keppel DC Ireland | Keppel DC Ireland |
| Kerry Functional Ingredients and Actives Carrigaline | Kerry Functional Ingredients and Actives Carrigaline |
| Kerry Global Technology and Innovation Centre | Kerry Global Technology and Innovation Centre |
| Kerrygold Park (Ornua Co-operative Ltd) | |
| Kerry Ingredients & Flavours (Charleville) | Kerry Ingredients & Flavours (Charleville) |
| Kerry Ingredients & Flavours (Listowel) | Kerry Ingredients & Flavours (Listowel) |
| Kerry Newmarket | Kerry Newmarket |
| Kilbush Nurseries Limited | Kilbush Nurseries Limited |
| Kilsaran International (Brownstown) | Kilsaran International (Brownstown) |
| Kyte Powertech | Kyte Powertech |
| Lakeland Dairies (Bailieboro) | Lakeland Dairies (Bailieboro) |
| Lakeland Dairies (Killeshandra) | Lakeland Dairies (Killeshandra) |
| LEO Pharma (Cork) | LEO Pharma |
| LEO Pharma (Dublin) | LEO Pharma |
| Lidl Ireland | Lidl Ireland |
| Liebherr Container Cranes Ltd | Liebherr Container Cranes Ltd |
| Liffey Meats Ltd | Liffey Meats Ltd |
| Malting Company of Ireland | Malting Company of Ireland |
| Mannok Cement | Mannok Cement |
| Mannok Pack | Mannok Pack |
| Mapaex | Mapaex |
| Masonite Ireland | Masonite Ireland |
| Mater Private | Mater Private |
| Meadow Meats | Meadow Meats |
| Medtronic (Athlone) | Medtronic |
| Medtronic (Galway) | Medtronic |
| Merck Arklow (Sigma Aldrich Ireland Ltd) | Merck Group |
| Merck Millipore Ltd | Merck Millipore Ltd |
| Mergon International | Mergon International |
| Merit Medical | Merit Medical |
| Micro-Bio Ireland Ltd | Micro-Bio Ireland Ltd |
| Microsoft | Microsoft |
| Microsoft Datacentre (Grangecastle) | Microsoft Datacentre (Grangecastle) |
| Monaghan Mushrooms Ltd | Monaghan Mushrooms Ltd |
| Mondelez Ireland Production Ltd (Dublin) | Mondelez Ireland Production Ltd (Dublin) |
| Mondelez Ireland Production Ltd (Kerry) | Mondelez Ireland Production Ltd (Kerry) |
| MSD Biotech | MSD Ireland (Dublin) |
| MSD Dunboyne | MSD Ireland (Dunboyne) |
| MSD Ireland (Brinny) | MSD Ireland (Brinny) |
| MSD Ireland (Carlow) | MSD Ireland (Carlow) |
| Musgrave Group | Musgrave Group |
| Northern Trust | Northern Trust |
| Nutricia Ireland Ltd | Nutricia Ireland Ltd |
| Organic Lens Manufacturing | Organic Lens Manufacturing |
| Ornua Co-operative Ltd (Kerrygold Park) | Ornua Co-operative Ltd (Kerrygold Park) |
| Pelagia Killybegs | Pelagia Killybegs |
| Pepsico Carrigaline | Pepsico Carrigaline |
| Pfizer (Newbridge) | Pfizer (Newbridge) |
| Pfizer Biotechnology (Grange Castle) | Pfizer Biotechnology (Grange Castle) |
| Pfizer Ireland Pharmaceuticals (Ringaskiddy) | Pfizer Ireland Pharmaceuticals (Ringaskiddy) |
| Pfizer Ireland Pharmaceuticals (Viatris) | |
| Pilgrim Foods Carrickmacross | |
| PPG SCM Ireland LTD | |
| Premier Periclase | Premier Periclase |
| Queally Group Naas | Queally Group Naas |
| Recordati | Recordati |
| Rednut Ltd | Rednut Ltd |
| Roadstone Wood Group | Roadstone Wood Group |
| Rosderra Irish Meats (Edenderry) | Rosderra Irish Meats (Edenderry) |
| Rosderra Irish Meats (Roscrea) | Rosderra Irish Meats (Roscrea) |
| RUSAL Aughinish | RUSAL Aughinish |
| Saint-Gobain Construction Products Ireland Ltd | Saint-Gobain |
| Sanmina-SCI | Sanmina-SCI |
| Sanofi | Sanofi |
| Servier (Ireland) Industries Limited | Servier (Ireland) Industries Limited |
| Silver Hill Duck | Silver Hill Duck |
| SISK (John Sisk & Son Ltd) | SISK |
| SK Biotek | SK Biotek |
| Slaney Foods | Slaney Foods |
| Stryker Anngrove | Stryker Anngrove |
| Stryker Neurovascular | Stryker Neurovascular |
| Stryker Orthopaedics | Stryker Orthopaedics |
| Stryker Springhill | Stryker Springhill |
| Stryker Tullagreen | Stryker Tullagreen |
| Taconic International Ltd | Taconic International Ltd |
| Takeda Ireland Ltd (Bray) | Takeda Ireland Ltd (Bray) |
| Takeda Ireland Ltd (Grange Castle) | Takeda Ireland Ltd (Grange Castle) |
| Tayto Snacks | Tayto Snacks |
| Temmler Ireland Ltd | Temmler Ireland Ltd |
| Tesco Ireland Ltd | Tesco Ireland Ltd |
| Teva Pharmaceuticals Ireland | Teva Pharmaceuticals Ireland |
| Thermo Fisher Scientific | Thermo Fisher Scientific |
| Thermo King Europe | Thermo King Europe |
| Tipperary Co-operative Creamery Ltd | Tipperary Co-operative Creamery Ltd |
| Tirlán Consumer Foods (Ballitore) | Tirlán Consumer Foods |
| Tirlán Consumer Foods (Drogheda) | Tirlán Consumer Foods |
| Tirlán Ingredients Ireland (Ballyragget) | Tirlán Ingredients Ireland |
| Tirlán Ingredients Ireland (Belview) | Tirlán Ingredients Ireland |
| Tirlán Ireland DAC | |
| Transitions Optical Ltd | Transitions Optical Ltd |
| United Drug | United Drug |
| Vodafone | Vodafone |
| Ward & Burke | Ward & Burke |
| Waters Technology | Water Technology |
| Weener Plastics Ltd | Weener Plastics Ltd |
| Wellman International Ltd | Wellman International Ltd |
| West Pharmaceutical Products Ireland Ltd - Waterford | West Pharmaceutical Products Ireland Ltd |
| West Pharmaceuticals Tech Group Europe - Dublin | West Pharmaceuticals Tech Group Europe |
| Western Proteins | Western Proteins |
| Wexford Creamery | Wexford Creamery |
| Wuxi Biologics Ireland | Wuxi Biologics Ireland |
| Wyeth Nutritionals Ireland | Wyeth Nutritionals Ireland |
| Xerox (Europe) Ltd | Xerox (Europe) Ltd |