Slow memory is an emergent concept that is intended to help us think from new angles about how societies and individuals remember the pasts that meaningfully affect their present and future. It begins from the premise that we are quite skilled (and have much practice) commemorating sudden or extreme events such as wars, atrocities or catastrophes. But we are less certain about how to reckon with slow-moving transformations that may be just as impactful, such as climate change, deindustrialization, or the gradual expansion of social and political rights. Thus, both negative and positive change can happen without having a clear location or timeframe. This COST Action brings together scholars and practitioners from many different disciplines (humanities, social sciences, natural sciences, technologists) to consider how we may grasp the meaning slow processes, how we may remember slowly, and how we may study slow change and slow remembrance without feeling too much time pressure.