Subject Commissions deal with types of library activity and focus on new developments within their sphere of interest in different countries, give sessions on selected aspects of their work and initiate new projects.

There are now Subject Commissions for:

• Bibliography
  Chair: David Day (email) (Brigham Young University, Provo, UT)
  Vice-Chair: Susanne Staral (Staatliches Institut für Musikforschung, Berlin)
  Secretary: Berit Holth (email) (National Library of Norway, Oslo)
  
• Audio-Visual materials
  Chair: Elizabeth Giuliani (email) (Bibliothèque Nationale de France, Paris)
  Vice-Chair: Inger Johanne Christiansen (email) (National Library of Norway, Oslo)
  Secretary: Mary Wedgewood (Library of Congress, Washington, DC)
  
• Service and Training
  Chair: Wolfgang Krueger (Hochschule der Medien, Stuttgart)
  Vice-Chair: Christiane Kriloff (Bibliothèque du Conservatoire national de région, Lyon)
  Secretary: Mary Wallace Davidson (email) (Indiana University School of Music, Bloomington, IN)
  
• Cataloguing
  Chair: Antony Gordon (email) (British Library Sound Archive, London)
  Vice-Chair: David Sommerfield (email) (Library of Congress, Washington, DC)
  Secretary: Joseph Hafner (email) (McGill University, Montréal)
  
• Sub-commission on Unimarc
  Chair: Laurence Decobert (email) (Bibliothèque Nationale de France, Paris)
  Secretary: Tiziana Morsanuto (Biblioteca Nazionale Marciana, Venezia)