Workshop proposals are invited for ICPE 2023 on specific aspects of performance engineering, particularly relating to the subject areas indicated by the conference call for papers. We encourage workshops that will discuss fundamental research issues driven by academic interests or more applied industrial or commercial concerns. The format of the workshop will be determined by the organizers and can include invited talks, panel discussions, work in progress, and fully refereed papers. Workshops can vary in length from a half day to a full day. Having more than one co-organizer for a workshop is strongly advised. The workshop proceedings will be published by ACM in the conference companion as post-proceedings.