| Provision of Microsoft LSP ServicesDirect Invite – Mini-Competition | Office of the Revenue Commissioners | CDW Limited | | €85,972,481 |
| CFT 3030445 ISW023F-1-007 PROJ000009323 Mini-Competition for Microsoft Solution Renewals and Associated Services for HSEDirect Invite – Mini-Competition | Health Service Executive | SoftwareONE | | €85,871,072 |
| Provision of Electricity Supply to the Government Agencies and Bodies in IrelandDirect Invite – Mini-Competition | The Office of Government Procurement | Electric Ireland | | €85,133,810 |
| Mini-Competition for the Supply of Electricity to the Health Service ExecutiveDirect Invite – Mini-Competition | The Office of Government Procurement | Electric Ireland | | €84,000,000 |
| National Contract for the Provision and Support of a Home Peritoneal Dialysis ServiceOpen Procedure | Health Service Executive (HSE) | Vantive Health Limited | | €82,121,960 |
| Service Provider to provide All Contact Centre Customer Service & Sales Activities for Residential & Business CustomersOpen Procedure | Electricity Supply Board ( ESB ) | Abtran Unlimited Company and Field Management Ireland Limited | | €82,000,000 |
| HSE 21246 - National Shared Care Record for the Health Service Executive (HSE)Competitive Dialogue | Health Service Executive (HSE) | Ernst and Young_86592_(Main Account) | | €81,711,000 |
| DBO/0081 Limerick Main Drainage Long Term Operate & Maintenance Contract | Uisce Éireann | Ward & Burke Ltd | | €80,576,531 |
| ITC015F -01-021 SRFT for Mobile Voice and Data Communications for the HSEDirect Invite – Mini-Competition | Health Service Executive | Three Ireland (Hutchison) Ltd; Vodafone | | €79,180,000 |
| SIGNALLING & TELECOMMUNICATIONS UPGRADE (DESIGN & BUILD) FOR THE CORK AREA COMMUTER RAIL (CACR) PROJECT.Competitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | Alstom Transport | | €78,499,190 |
| Provision of Electricity Supply to the Local Authorities in IrelandDirect Invite – Mini-Competition | The Office of Government Procurement | Energia | | €77,149,997 |
| Supply of Natural Gas to Central Government, Local Authority and Security Services SectorDirect Invite – Mini-Competition | The Office of Government Procurement | Bord Gais Energy Limited | | €76,183,220 |
| Acute Inpatient Ward (96-bed) Block at University Hospital Limerick (UHL)Restricted Procedure | Health Service Executive (HSE) | John Sisk & Son (Holdings) Limited | | €76,161,553 |
| Call for tenders for the provision of hot meals under the school meals scheme to St Patrick's NS 16672P Check value | St Patrick's National School (Letterkenny) 16672P | School Lunches Catering Limited | | €75,129,600 |
| 9365 (9096-19) OBE53 Waterproofing and Stitching Check valueDirect Invite – Mini-Competition | Iarnród Eireann-Irish Rail | Triur Construction Limited | | €75,000,000 |
| Core ICT Infrastructure for Children's Health Ireland | Health Service Executive (HSE) | Telefonica Tech Ireland Limited | | €75,000,000 |
| Supply & Delivery of Rail Check value | Iarnród Eireann-Irish Rail | Arcelor Mittal | | €73,085,130 |
| RFT for the Provision and Operation of Safety Cameras on a Managed Service Basis for An Garda SíochánaOpen Procedure | The Office of Government Procurement | Go Safe Limited | | €73,000,000 |
| MTU Powerpack Maintenance ServicesCompetitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | LH - Group Services Ltd | | €70,500,000 |
| Facility Management Hard Services to the Irish Prison ServiceRestricted Procedure | The Office of Government Procurement | LMC FM Limited | | €69,979,930 |
| 9024 Maintenance of the 38kV equipment in Traction SubstationsCompetitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | Tli Group Limited | | €69,272,843 |
| T.077/2025 Request for Tenders for the establishment of Contract for the provision of Application Support and Project Delivery services, for An Garda Síochána | An Garda Síochána | Accenture Limited | | €69,000,000 |
| Temperature Controlled Supply Chain Management Services | Health Service Executive (HSE) | United Drug Distributors Ireland Limited | | €69,000,000 |
| N24 Carrick-on-Suir Pavement Strengthening SchemeOpen Procedure | Tipperary County Council | Glas Civil Engineering Limited | | €68,500,000 |
| Call for Tender for the provision of hot school meals freshly prepared on site under the School Meals Scheme to O'Growney NS 17623HOpen Procedure | O'Growney National School | The School Food Company Limited | | €67,791,360 |