- ENFO: Ireland's environmental information service.
- ECO UNESCO: raises environmental awareness and promotes protection of the environment.
- Environmental Protection Agency (EPA): includes second-level resources for CSPE, Geography, Science, and Transition Year.
- United Nations Environmental Programme (UNEP): provide sleadership and encourage partnership in caring for the environment.
- Environment and Schools Initiative (ENSI): an international network that supports educational and pedagogical developments that promote insight into learning for sustainable development, environmental studies, active forms of learning and teaching, and education for citizenship.
- Worldwatch Institute: publishes accessible, fact-based analysis on global environmental concerns.
- The Green Guide to Car CO2 Emissions: shows CO2 emissions by car type and engine size.
- Cultivate Living and Learning: offers active education on practical sustainability, with facilities in Dublin and Cloughjordan, Co Tipperary.
- The Earth Charter: a universal expression of ethical principles to foster sustainable development.
- World Wildlife Fund (WWF): promotes respect and value for the natural world and finding ways to share the Earth’s resources fairly; includes a section on education.
- Wild Aid: aims to end the illegal wildlife trade in our lifetimes by reducing demand through public awareness campaigns and providing comprehensive marine protection.
- Just Forests: promotes a 'justice for forests' approach to wood culture in Ireland.
- Forest Stewardship Council (FSC): promotes the responsible management of forests worldwide.
- Ecological Footprint Quiz: estimates the amount of land and ocean area required to sustain your consumption patterns and absorb your wastes on an annual basis.
- The Redlist of Endangered Species.
Energy and Peak Oil:
- Association for the Study of Peak Oil & Gas (ASPO): provides information and discussion on the impact of the peak and decline of the world's production of oil and gas.
- Sustainable Energy Authority of Ireland (SEAI): Aims to transform Ireland into a society based on sustainable energy structures, technologies and practices, with a vision of making Ireland a recognised global leader in sustainable energy.
- Eco-Fuel Africa: Empowering African communities to use tailor-made technology, helping them convert locally sourced farm and municipal waste into clean cooking fuel and organic fertilizer.
- Cloughjordan Eco-village: Brings together a diverse group of people creating an innovative new community in Tipperary, in a way that is democratic, healthy and socially enriching while minimising ecological impacts.
- Irish Wind Energy Association (IWEA): Committed to the promotion and education of wind energy issues and plays a leading role in the areas of conference organisation, lobbying and policy development on the island of Ireland.
- Cell Energy Ireland (CEI): Ireland's leading renewable energy company, specialising in building integrated renewable energy systems, and working directly with architects, housing developers and home owners throughout Ireland to deliver renewable energy and carbon reduction solutions.
- Irish Government Strategy for Renewable Energy 2012-2020: Strategy document published by the Department of Communications, Energy & Natural Resourcs (DCENR) in May 2012.
- Ireland's Department of the Environment, Community and Local Government: Its mission is to pursue sustainable development.
- Irish Aid Environment Policy for Sustainable Development: Environment is one of four policy priority issues that Ireland is committed to addressing across its programme for overseas aid. The policy sets out Irish Aid’s objectives in the area of environmental sustainability and proposes concrete strategies to achieve these aims.
- Stop Climate Chaos: the UK’s largest group of people dedicated to action on climate change and limiting its impact on the world’s poorest communities, with a supporter base of more than 11 million people spanning over 100 organisations.
- United Nations Environmental Programme: Its mission is to provide leadership and encourage partnership in caring for the environment by inspiring, informing, and enabling nations and peoples to improve their quality of life without compromising that of future generations.
- UK Climate Impact Programme: Supports adaptation to the unavoidable impacts of a changing climate.
- Intergovernmental Panel on Climate Change: the leading international body for the assessment of climate change, established by the United Nations Environment Programme (UNEP) and the World Meteorological Organization (WMO) in 1988 to provide the world with a clear scientific view on the current state of knowledge in climate change and its potential environmental and socio-economic impacts. It is a scientific body that reviews and assesses the most recent scientific, technical and socio-economic information produced worldwide relevant to the understanding of climate change.