Archaeological Survey of Ireland - Search an online database of archaeological monuments in Ireland
http://webgis.archaeology.ie/historicenvironment/

Irish Archaeology on the Internet
www.xs4all.nl/~tbreen/links.html

Discovery Programme
www.discoveryprogramme.ie

Department of Culture, Heritage and Gaeltacht
https://www.chg.gov.ie/

Database of Irish Excavation Reports
www.excavations.ie

National Museum
www.museum.ie

National Library of Ireland
www.nli.ie

National Archives
www.nationalarchives.ie

Royal Irish Academy
www.ria.ie

Institute of Archaeologists of Ireland 
www.instituteofarchaeologistsofireland.ie