Introduction to IBPPC 2022Behavioural Public Policy (BPP) is an established sub-discipline of public policy. BPP uses insights from behavioural science, broadly defined, to shape and inform public policy. Intersectionality in social sciences research is central to the research agenda of BPP. To this extent, BPP invites diversity in its approach to understand human behaviours and make policy recommendations, from scholars across established disciplines, notably economics, philosophy, psychology, political science and many more. This interdisciplinary take, in turn, allows BPP to be novel in its methodology and cross-cutting in its applications, in policy fields spanning across environment and climate change, development and social policy, finance, health, misinformation, privacy, law and regulation, and technology and Artificial Intelligence, to name a few.BPP formally developed as a structured field of active research in the last decade. To advance research in BPP, multiple initiatives have been taken. One such initiative is the annual International Behavioural Public Policy Conference (IBPPC). This editorial summarises what happened at IBPPC 2022 and introduces eleven papers that were presented at the conference which compose this conference special issue. IBPPC 2022 was organised in London between 7 and