The annual SIGIR conference is the major international forum for the presentation of new research results, and the demonstration of new systems and techniques, in the broad field of information retrieval (IR). The 45th ACM SIGIR conference, will be run as a hybrid conference – in person in Madrid, Spain, with support for remote participation, from July 11th to 15th, 2022. We welcome contributions related to any aspect of information retrieval and access, including theories, foundations, algorithms, evaluation, analysis, and applications. The conference and program chairs invite those working in areas related to IR to submit high-impact original papers for review. Please note a CFP for other paper tracks, as well as workshops, tutorials, doctoral consortium, industry day, and other SIGIR 2022 venues will be released separately.