**Our apologies if you receive multiple copies of this CFP** *CALL FOR TUTORIALS AND WORKSHOPS* The ECML PKDD 2020 Organizing Committee invites proposals for tutorials and workshops to be held on the first and last days of the conference: September 13th and 17th, 2021. *SCOPE AND MOTIVATION* TUTORIALS are intended to provide a comprehensive introduction to established or emerging research topics of interest to the machine learning and data mining community. These topics include related research fields or applications but also well-developed tools and suites that support ML/DM research. WORKSHOPS in current and emerging topics in machine learning and data mining provide an opportunity to discuss novel topics in a small and interactive atmosphere. They can concentrate on research topics, but can also be devoted to application domains or issues, or to questions concerning the economic and social aspects of machine learning and data mining. Multidisciplinary workshops that bring together researchers and practitioners from different communities are particularly welcome. *IMPORTANT DATES* Tutorials: proposal deadline: March 26, 2021 acceptance notification: April 9, 2021 final abstract submission: April 28, 2021 course material (slides, bibliography) online: September 1, 2021 conference: September, 13-17, 2021. Workshops: proposal deadline: March 26, 2021 acceptance notification: April 9, 2021 websites and call for papers online: April 28, 2021 paper submission: June 23, 2021 (suggested) program and proceedings online: September 1, 2021 conference: September, 13-17, 2021. For more information please visit https://2021.ecmlpkdd.org/?page_id=1603 Other events at ECML PKDD: -regular papers (Research and Applied Data Science Tracks) https://2021.ecmlpkdd.org/?page_id=1599 -journal track https://2021.ecmlpkdd.org/?page_id=1341 -PhD forum https://2021.ecmlpkdd.org/?page_id=1591 -discovery challenge https://2021.ecmlpkdd.org/?page_id=1610 We look forward to welcoming you in Bilbao.