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CP

International Conference on Principles and Practice of Constraint Programming

Computer scienceSoftware engineering

Paper deadline

Not announced

Last deadline 2026-03-14; next edition not announced yet.

Edition: July 20-23, 2026
Where: Lisbon, Portugal

Official website

Past deadlines

When the paper deadline fell in recent years: a good guide to when the next call will close.

Edition	Paper deadline	Where
2026	2026-03-14	Lisbon, Portugal
2025	2025-04-03	Glasgow, Scotland
2024	2024-04-26	Girona, Catalonia, Spain
2023	2023-05-05	Toronto, Canada
2022	2022-02-25	HAIFA, ISRAEL
2021	2021-05-30	Online

Official rankings

Computer science ranks its conferences. We don't reproduce the lists; check CP on each:

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OSDIUSENIX Symposium on Operating Systems Design and Implementation	8 Dec 2026
ISSTAACM SIGSOFT International Symposium on Software Testing and Analysis	11 Jan 2027
EASEInternational Conference on Evaluation and Assessment in Software Engineering	22 Jan 2027
COMPSACInternational Computer Software and Applications Conference	31 Jan 2027

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Deadlines from public conference data and the official site, checked 2026-11-09 (Data sources). Dates change: confirm on the official site before you submit. DeskReady is not affiliated with CP.