| Specialised Care Services Clinical Management System ‘Community Connect’ | Health Service Executive (HSE) | Intersystems BV | | €65,010,160 |
| The Development of the Crawford Art Gallery, Emmett Place, CorkOpen Procedure | Office of Public Works (OPW) | PJ Hegarty and Sons Building Contractor (Cork) | | €61,338,106 |
| Provision of Contracted Satellite Haemodialysis Unit for Kilkenny | Health Service Executive (HSE) | Fresenius Medical Care (Ireland) Limited | | €54,399,685 |
| Works Contractor for the Restoration and Interpretation of Westport House and EstateRestricted Procedure | Inishoo Management Ltd | Conack Construction Unlimited Company | | €43,995,680 |
| CfT 5717983 Contract for Redevelopment of St. Anne's Court, Raheny | Dublin City Council | Purcell Construction Limited | | €43,562,654 |
| MLS for the provision of Biochemistry Services at UHW, SLK, TippUH and WGH | Health Service Executive (HSE) | Roche Diagnostics Limited | | €40,000,000 |
| SRRRP B11 PackageDirect Invite – Mini-Competition | Department of Education and Skills (not active) | John Sisk & Son (Holdings) Limited | | €39,981,451 |
| Est Constr Surgical Hub at Merlin Park University Hospital Galway | Health Service Executive (HSE) | John Sisk & Son (Holdings) Limited | | €38,415,300 |
| Request for Tender for The Provision of Catering and Hospitality Services to Education Training Board Training Centres | Cork Education and Training Board | Campbell Catering Limited | | €37,400,000 |
| Contract for Building Works at Port Centre for Dublin Port CompanyCompetitive Procedure With Negotiation | Dublin Port Company | John Sisk & Son (Holdings) Limited | | €36,291,390 |
| Foynes to Limerick Road (including Adare Bypass) – Adare to Attyflin Construction ContractOpen Procedure | Limerick City and County Council | John Sisk & Son (Holdings) Limited | | €35,470,266 |
| Commercial Cleaning Services for University Hospital Waterford / Kilcreene Regional Orthopaedic Hospital (UHW/KROH)Direct Invite – Mini-Competition | Health Service Executive (HSE) | Momentum Support | | €34,949,000 |
| National Bespoke Panel Arrangement for the Provision of Autism Diagnostic Assessments for Children and AdolescentsOpen Procedure | Health Service Executive (HSE) | AutismCare and 28 others | | €34,800,000 |
| CFT for the provision of Investment Management Providers for the Investment of the Automatic Enrolment Retirement Savings SystemOpen Procedure | Department of Social Protection | Amundi Ireland Limited and 2 others | | €34,064,111 |
| 8623 SUPPLY OF TELECOMMUNICATIONS BATTERIESCompetitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | FIltration Control Ltd | | €33,660,000 |
| Contract for the Construction of the National Cricket Centre - Contract OneRestricted Procedure | Sport Ireland | John Sisk & Son (Holdings) Limited | | €29,998,500 |
| N86 Ballynasare Lower to Ballinclare and Doonore North to Ballygarret Road Improvement Scheme | Kerry County Council | Jons Civil Engineering Company Limited | | €29,880,720 |
| HSE 21963 National Contract for Phlebotomy and Blood Collection ProductDirect Invite – Mini-Competition | Health Service Executive (HSE) | Sarstedt Limited and 2 others | | €29,261,039 |
| 9803, ISA, NoBo, DeBo Services | Iarnród Eireann-Irish Rail | Rina Services S.P.a. | | €29,000,000 |
| 9803, ISA, NoBo, DeBo Services | Iarnród Eireann-Irish Rail | Rina Services S.P.a. | | €29,000,000 |
| 9803, ISA, NoBo, DeBo Services | Iarnród Eireann-Irish Rail | Rina Services S.P.a. | | €29,000,000 |
| HSE 25308 DPS National Tender for Pre Poured MediaDirect Invite – Mini-Competition | Health Service Executive (HSE) | Syntec Scientific, Fannin, BioMerieux, Serosep | | €28,000,000 |
| CNWQR Phase 3B Housing ContractOpen Procedure | Cork City Council | MMD Construction (Cork) Limited | | €26,521,924 |
| CFT 3167264 Development Agreement with Stage Payments-DDB - Social Housing Schemes in Dublin 2024 (OJ S 45/2024 04/03/2024) Lot 2 | Clúid Housing Association | Somerton Ii Residential Designated Activity Company | | €25,841,194 |
| New Competition - Management and Operation Of Campus Sports Centre incorporating A 25 Meter Swimming Pool, Gymnasium, Multipurpose Sports Hall and Other Facilities on behalf of University of GalwayCompetitive Procedure With Negotiation | University of Galway (ID 1400) | Swimworld Limited | | €25,000,000 |