Industry Day at ECIR 2021 will be held on April 1, 2021, immediately after the regular conference program. It will bring together IR researchers, practitioners, analysts, and consumers interested in all IR-related issues concerning knowledge transfer across academia and industry. This year, we also encourage presentations of research works carried out during student internships and showing how interns contributed impactfully on real-world products with innovative ideas. We also seek proposals for talks about interesting collaborations between academia and industry, or about open problems in industry that are of interest to academic and industrial researchers. Full call: https://www.ecir2021.eu/call-for-industry-day-presentations/ Submission website: https://easychair.org/conferences/?conf=ecir2021 Important dates Industry Day proposals due: January 15, 2021, 11:59 pm (AoE) Notification of proposal acceptance: February 10, 2021 Industry Day presentations: April 1, 2021 Industry Day Chairs: Fabrizio Silvestri, Facebook, UK Roi Blanco, Amazon, ES Contact: IndustryDayChairs@ecir2021.eu