Dear Colleagues, We are pleased to announce the Call for Workshop Proposals for ACM RecSys 2026, the leading conference on recommender systems, taking place September 28 – October 2, 2026, in Minneapolis, Minnesota, USA. The workshops will be held on the first or last day of the conference. Details & submission guidelines can be found here: https://recsys.acm.org/recsys26/call/#content-tab-1-6-tab The goal of the workshops is to provide additional venues for discussing novel ideas as well as recent results of research in progress. We encourage the community to propose workshops that explore newly emerging, currently evolving, as well as historically understudied topics, and that adopt diverse and engaging workshop formats. We actively encourage both academia researchers and industry practitioners to submit proposals. Different full-day and half-day workshop formats are possible, for example: - Workshops with novel interactive formats and a relatively small number of participants. Such workshop formats might for example target the exploration of a certain topic during the workshop through a moderated discussion, resulting in a draft paper or report to be completed and published after the workshop. Or they might focus on datasets and benchmarking for a particular problem or domain. Particular priority will be given to these formats which require the active involvement of the participants. - Workshops with the traditional workshop format on specialized topics. Such workshops typically have their own paper submission and review processes. Proposals for the continuation of an existing workshop series are welcome. However, please include a brief statement on the necessity for the new edition, including a description of the outcomes of previous years and the expected novelty of this edition. IMPORTANT DATES Workshop proposal submission deadline: March 10, 2026 Workshop proposal notification: April 3, 2026 Camera-ready workshop summary deadline: July 20, 2026 Deadlines refer to 23:59 (11:59pm) in the AoE (Anywhere on Earth) time zone. Please submit your proposal to EasyChair. Best regards, Noemi Mauro and Pan Li On behalf of the ACM RecSys 2026 Organizing Committee