The purpose of the Italian Information Retrieval Workshop (IIR) is to provide a meeting forum for stimulating and disseminating research in Information Retrieval, where Italian researchers (especially young ones) and researchers affiliated with Italian institutions can network and discuss their research results in an informal way. IIR 2022 is the 12th edition of the Italian Information Retrieval Workshop and is organized by RecSys Lab and IKR3 Lab. It will take place on June 29th, 2022 at Politecnico di Milano, and on June 30th, 2022 at University of Milano-Bicocca. This edition of the Italian Information Retrieval Workshop will include a number of invited lectures from senior researchers. Participation to the IIR 2022 workshop will be free of charge. However, advance registration will be strictly required.