There are currently 48 member libraries:
Balfour Library (Pitt Rivers Museum)
Balliol College Library
Bodleian Japanese Library
Bodleian Law Library
Bodleian Library
Chinese Studies Library
Corpus Christi College Library
Earth Sciences Library
Eastern Art Library
Educational Studies Library
English Faculty Library
Experimental Psychology Library
Geography and the Environment Library
Health Care Libraries
History Faculty Library
Hooke Library
Indian Institute Library
Lady Margaret Hall Library
Latin American Centre Library
Libraries Board Staff Library
Linacre College Library
Mathematical Institute Library
Middle East Centre Library
Music Faculty Library
Nuffield College Library
Oriel College Library
Oriental Institute Library
Oxford University Museum of Natural History Library
Philosophy Faculty Library
Plant Sciences Library
Queen's College Library
Radcliffe Science Library
Refugee Studies Centre Library
Rhodes House Library
Sackler Library
Social Science Library
St Anne's College Library
St Antony's College Library
St Cross College Library
St John's College Library
St Peter's College Library
Taylor Institution Main Library
Taylor Institution Modern Languages Faculty Library
Taylor Institution Slavonic & Modern Greek Library
Theology Faculty Library
Vere Harmsworth Library (Rothermere American Institute)
Wolfson College Library
Zoology Library
The following chart shows how the number of member libraries has changed over the years, increasing as new libraries join and decreasing as libraries merge together into larger units.