The fourth Workshop on User-Centered Artificial Intelligence (UCAI ’23) was held in Rapperswil, Switzerland, on Sunday, 3rd September, in conjunction with the 2023 Mensch und Computer conference.

The workshop was organized by the working group of the GI Section on Human-Computer Interaction, the SIG Nutzerzentrierte Künstliche Intelligenz (NKI). Researchers from a variety of backgrounds presented their work and discussed emerging issues in the field of human-centered artificial intelligence.