BEC is a biennial conference on Bose-Einstein Condensation open to all scientists interested in this field. This outstanding scientific forum provides participants with the possibility to share the latest developments. BEC 2021 takes place in Sant Feliu de Guixols (Spain). In case travel is still limited due to the covid-19 pandemic in summer 2021, the conference may be organized partly or completely on-line. Decision about the format will be made in May 2021, at the latest.