The 53rd ACM SIGPLAN Symposium on Principles of Programming Languages (POPL 2026) will be held in Rennes, France. POPL provides a forum for the discussion of fundamental principles and important innovations in the design, definition, analysis, transformation, implementation and verification of programming languages, programming systems, and programming abstractions. Events focusing on experimental and theoretical topics are welcome. We invite proposals for workshops and other events to be co-located with POPL 2026. All co-located events are sponsored by SIGPLAN (http://acm.org/sigplan/). Workshops should be more informal and focused than POPL itself, and include sessions that enable interaction among the workshop attendees. The preference is for one-day workshops, but other schedules can also be considered. --------------------------------------------------------------------- Submission details Deadline for submission: 25 July 2025 Notification of acceptance: 1 August 2025 A workshop proposal should provide the following information: * Name of the workshop. * A short description (150-200 words) of the workshop. * Call for submissions. * Duration of the workshop. * Whether the workshop will be Conference-approved or SIGPLAN-approved (see below). * Organizers: names, affiliation, contact information, brief (100 words) biography. * Event format: workshop; type of submissions if any; review process; results dissemination. * Expected attendance and target audience. * Potential PC members - please do not contact them before the workshop is approved. * History of the workshop. * Plans for remote participation Please submit your proposals at https://popl26.sigplan.org/track/POPL-2026-workshops-and-co-located-events --------------------------------------------------------------------- SIGPLAN Sponsorship POPL co-located events are sponsored by SIGPLAN (http://sigplan.org/). There are two kinds of co-located events: Conference-approved (no proceedings) and SIGPLAN-approved (proceedings in the ACM Digital Library). See http://www.sigplan.org/Resources/Guidelines/Workshops/ for more information, including a full listing of prescriptions for Conference-approved and SIGPLAN-approved workshops. SIGPLAN-approved workshops must respect the SIGPLAN Diversity Policy. Proposals for SIGPLAN-approved workshops must additionally include the gender, country of affiliation, and professional status of potential PC members. See https://www.sigplan.org/Resources/Policies/Diversity/ for more details. --------------------------------------------------------------------- Selection committee All submissions will be evaluated by a committee comprising the workshops co-chairs, the general chair, and the program chair. --------------------------------------------------------------------- Further information Any questions regarding POPL 2026 co-located event proposals should be addressed to the workshops chairs, Robert Rand (rand@uchicago.edu) and Alan Schmitt (alan.schmitt@inria.fr).