| Request for Tenders for the Provision of External ICT SupportOpen Procedure | Office of the Revenue Commissioners | Accenture Limited and 17 others | | €145,391,778 |
| The N5 Ballaghaderreen to Scramoge Road ProjectRestricted Procedure | Roscommon County Council | Roadbridge Limited | | €134,631,696 |
| MTU Powerpack Maintenance ServicesCompetitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | LH - Group Services Ltd | | €70,500,000 |
| Mini-competition for supply of Natural Gas to the Education Sector: Primary and Secondary schools, ETB's, Third Level Education InstitutionsDirect Invite – Mini-Competition | The Office of Government Procurement | SSE Airtricity Limited | | €60,277,847 |
| E3 Learning Foundry Main Contractor Works for Trinity College Dublin, the University of DublinRestricted Procedure | Trinity College Dublin the University of Dublin | J.J. Rhatigan & Company Unlimited Company | | €47,467,296 |
| Mini Competition for Microsoft Licensing Services for An Garda SiochanaDirect Invite – Mini-Competition | An Garda Síochána | Micromail Limited | | €45,000,000 |
| Supply of Electricity to CIECompetitive Procedure With Negotiation | Iarnród Eireann-Irish Rail | Electric Ireland | | €44,700,000 |
| Coonagh to Knockalisheen Distributor Road Scheme- Main Works Contract.(PIN no. 158129 refers)Open Procedure | Limerick City and County Council | Roadbridge Limited | | €28,736,154 |
| Commercial Vehicle Information System: Enhancement and Maintenance/Support ProvisionRestricted Procedure | Road Safety Authority (RSA) | Fujitsu (Ireland) Limited | | €25,300,000 |
| IPS001F-C-255 - Mini-competition for the provision of Software Support and Maintenance Services for the Primary Care Eligibility and Reimbursement Service (PCERS)Direct Invite – Mini-Competition | Health Service Executive (HSE) | Sonas Innovation Limited | | €22,300,000 |
| Invitation to tender for the Provision of Hygiene and Associated Services to St James’s Hospital (SJHCompetitive Dialogue | St James's Hospital | Momentum Support | | €22,000,000 |
| IPS001F-C-362 - Mini Competition for the provision of a team of software developers for BPS & EMS Systems for the Dept. of Agriculture, Food and the Marine (Support Service) (1)Direct Invite – Mini-Competition | The Office of Government Procurement | Version 1 | | €20,875,700 |
| ISW018F SRFT for Microsoft Licensing Services for HEAnetDirect Invite – Mini-Competition | HEAnet CLG | Micromail Limited | | €20,112,879 |
| Intelligent Transport Systems - Equipment Maintenance Contract Gen.3Open Procedure | Transport Infrastructure Ireland (TII) | Swarco UK and Ireland Ltd (Formally Dynniq UK Ltd) | | €17,593,558 |
| Design and Construction of 67 No. Accelerated Delivery Dwellings and Associated Site Works at Churchfields Phase 2B, Mulhuddart, Dublin 15.Open Procedure | Fingal County Council | Abm Contractors Limited | | €17,531,902 |
| ISW018F SRFT Microsoft Licensing Services for Office of the Government Chief Information OfficerDirect Invite – Mini-Competition | Office of the Government Chief Information Officer | CDW Limited | | €15,895,000 |
| SRFT for Microsoft Licensing Services for TuslaDirect Invite – Mini-Competition | Tusla Child and Family Agency | SoftwareONE | | €15,235,126 |
| The provision of a Passport Issuance and Processing System (PIPS) for Dept of Foreign AffairsCompetitive Procedure With Negotiation | The Office of Government Procurement | HID Global Ireland Teoranta | | €14,733,993 |
| Design & Construction of 69 No. Accelerated Delivery Dwellings at Liscappagh (Cappaghfinn Phase 3), Cappagh Road, Finglas, Dublin 11 (FCC/188/18)Open Procedure | Fingal County Council | Abm Contractors Limited | | €14,520,765 |
| Mini-competition for iOS and MacOS computers for HEAnet (iOS and MacOS Computers).Direct Invite – Mini-Competition | HEAnet CLG | Compu b - Business Department | | €14,000,000 |
| Mini-competition for iOS and MacOS computers for HEAnet (iOS and MacOS Computers).Direct Invite – Mini-Competition | HEAnet CLG | Wriggle Learning Limited | | €14,000,000 |
| Construction of a new 2-span bridge over N3 adjacent to existing Snugborough Road BridgeRestricted Procedure | Fingal County Council | BAM Contractors Limited | | €13,942,384 |
| MC for Business and Management and ICT Consultancy Services for Courts ServiceDirect Invite – Mini-Competition | The Courts Service | Deloitte Ireland LLP | | €13,906,000 |
| Provision of Computer Aided Dispatch (CAD) and Communications Platform with Supporting Services to An Garda Síochána (PQQ)Restricted Procedure | An Garda Síochána | SAAB Technologies UK Limited | | €13,525,000 |
| The Supply & Maintenance of TyresCompetitive Procedure With Negotiation | Bus Eireann/Irish Bus | Bridgestone Ireland Limited | | €13,250,000 |