Completed PhDs
| Name | Thesis Title | Year Graduated |
| Terrence McFadden | Innovation, Diversification and Sustainability | 2011 |
| Eda Ustaoglu | Urban Growth and its Impact on Peri-Urban Areas | 2011 |
| Jurate Jaraite | Essays on the appraisal of the EU emissions trading scheme | 2011 |
| Barry Anderson | Essays on the economics of environmental policy and technological change | 2011 |
| Cormac Walsh | Strategic Spatial Planning at the Regional and Local Scales: A Case Study of the Dublin City-Region |
2010 |
| Karen Foley | New lives, new landscapes: the attitudes of different stakeholders to landscape change in rural Ireland | 2010 |
| Marcus Collier | Socio-cultural Interactions in Industrially Mined Landscapes: Implications for Peatland After-use Policies in Ireland |
2009 |
| Mirko Moro | Essays on the Measurement of Sustainability and Well-being | 2008 |
| Menelaos Gkartzios | Counterurbanisation and Metropolitan Decentralisation in the Greater Dublin Area | 2008 |
| Neil Walker | The Impact of CO2 Emissions Trading on the European Cement Industry | 2008 |
| Fearghal King | Land Use Patterns and Urban Travel Behaviour: towards an evidence-based policy approach to land use and transport planning in the Greater Dublin Area | 2008 |
| Louise Gallagher | Public Attitutes to Solid Waste Infrastructure and the role of Compensation in Siting Decisions | 2007 |
| Eoin O'Neill | Explorations in Economics and Planning | 2007 |
| Peter Howley | Sustainability versus Liveability: an investigation into the implications of high-density living | 2007 |
| Lisa Ryan | An Economic Assessment of Policy Instruments to Reduce Greenhouse Gas Emissions from Passenger Cars in Europe | 2006 |
| Luke Redmond | The European Union Emmissions Trading Scheme (EUETS): a contribution towards undertanding allowance allocation, markets and performance and operation in a small open economy | 2006 |
| Simon McDonnell | The Use of Bus Priority Measures as a Policy Instrument to Mitigate Transport Generated Externalities | 2006 |
| Finbarr Brereton | Essays on the Economics of Happiness | 2006 |
| Craig Bullock | Measuring the Value of Urban Green Space: A choice experiment approach | 2004 |
| Andrew Kelly | Parking Demand Management as a Policy Tool | 2003 |
| William Hynes | Planning for Airport Development: an integrated planning methodology for airport capacity assessment | 2003 |
| Louise Dunne | Towards a Theory of the Imepdiments to the Political Acceptability of Environmental Taxes and Environmental Tax Reform | 2002 |
| Paula Russell | Commmunities and Institutions: involving communities in urban regeneration: Case studies of EU co-financed urban renewal in Dublin , Cork and Limerick 1995-1999 | 2002 |
| John Healy | Domestic Energy Efficiency, Fuel Poverty and Health: A Pan-European analysis | 2002 |
| Niamh Moore | The Celtic Tiger and the Welsh Dragon: Urban redevelopment in Dublin Docklands and Cardiff Bay, 1987-2000 | 2001 |
| Diarmuid O Grada | Dublin Divided: The impact of social conflict on planning and development in Georgian Dublin 1750-1800 | 1999 |
| James Peter Clinch | Towards a Measure of Total Economic Value: The case of forestry in Ireland | 1997 |