Materiality looms large in the world of archives, whether in storage, conservation, shape or materials of the records. Increasingly records are created digitally on a hitherto unimagined scale. How do born-digital records transform our understanding of the materiality of the archive? How do digital techniques provide new insights into the materiality of older archives? Archival Materialities in a Digital Age, based on a workshop organised by The National Archives, UK, and the University of Glasgow in 2018, contains a series of authoritative studies by archivists and researchers who are grappling with these issues on a daily basis. The research presented in Archival Materialities in a Digital Age shows how these challenges are causing a reconsideration of archival theories and precepts while at the same time offering a huge range of opportunities to investigate archives in new and innovative ways.