The proliferation of AI-based techniques poses a range of new challenges for the design and engineering of intelligent and adaptive systems since they tend to either act as black boxes or, more generally, not offer the user sufficient transparency, control, and interaction opportunities, which are considered major goals of user-centred design in the HCI field. This workshop aims to share and discuss recent developments at the intersection of HCI and AI and to explore novel methodological, technical, and interaction approaches. Researchers and practitioners with diverse disciplinary backgrounds can and should contribute to addressing the challenges in this emerging field of human-centred artificial intelligence.