COPAC
Provides free access to the merged online catalogues of 24 of the largest university research libraries in the UK and Ireland .

National Library of Ireland
The National Library of Ireland is the library of record for Ireland . The National Library is a cultural institution under the aegis of the Department of Arts, Sport and Tourism. Its mission is to collect, preserve and make available books, manuscripts and illustrative material of Irish interest.  The library maintains a collection of historical manuscripts, photographs and other materials not generally available elsewhere.  The library considers itself as a library of last resort and will generally not provide access to material that is readily available through an academic library to which he/she has access, or to consult material which is available via the public library service. The library, however, does maintain an online collection of online manuscripts and photographs.

The Chester Beatty Library
The Chester Beatty Library and Galleries are situated in the gardens of Dublin Castle in the heart of the city centre. They are a two minute's walk from Dame Street via the Palace Street Gate of the Castle and close to Christchurch Cathedral. This Website is currently under redesign.  Maintains an online image gallery.   

Irish History Resources at Questia
Electronic online library with what it claims to be the world’s largest online collection.  Requires subscription to check out books.

University College Cork Library
The University College Cork contains an extensive online library, including a legal online library with copies of legislation, leading Irish cases  and unreported judgments as well as a number of on line legal journals.

Dublin City University Library
The mission of this library is to foster creativity and to spearhead change for the benefit of society.  This library has an electronic library available with electronic databases and electronic journals.

James Hardiman Library, National University of Ireland
Established in 1845 as part of Queen’s College Galway.

Library at Queens University Belfast
Maintains a number of electronic journals and databases.

National University of Ireland, Maynooth Library
This website provides an accessible gateway to the wide range of information resources and services in the John Paul II and Russell Libraries.  Also provides electronic journals.

Trinity College Dublin Libraries
The Library of Trinity College is the largest research library in Ireland . In addition to the purchases and donations of almost four centuries, the Library is privileged in having the right to legal deposit of British and Irish publications. The Library contains over 4 million volumes, thirty thousand current serials, significant holdings of maps and music and an extensive collection of manuscripts, the most famous being Book of Kells.  Electronic library requires license.

University College Dublin Library
University College Dublin ’s school library, with electronic resources and web resource guide.

University of Limerick Library
The University of Limerick’s library, with electronic data base and journals.

University of Ulster Library
The University of Ulster’s library, with electronic database available only to students and faculty.