The term ‘postdigital memory’ encapsulates views of memory that involve a critical perspective on the intersection of digital technology and media, and different forms of human and technological memory. This entry draws on accounts from psychology, media studies, cultural studies, distributed cognition and sociomateriality to position memory as a complex phenomenon that combines social, material, digital individual and collective activity, and is entangled in issues of biology, politics, economics, the environment, and social justice. This conception supports critical perspectives on the datafication and commercialisation of memory, and highlights the relevance of transdisciplinary and more expansive understandings of memory work.