Elected Academician of the International Eurasian Academy of Sciences on 21 November 2017, the late Professor David G. Gee (1937–2023) was a distinguished British-born Swedish geologist whose work profoundly advanced understanding of the Scandinavian Caledonides and the wider Palaeozoic mountain belts of Eurasia. Born in Sutton, Surrey, on 11 December 1937, he studied at the University of Cambridge before receiving his Ph.D. in Svalbard tectonics in 1966 under the supervision of W. Brian Harland. Following two decades with the Geological Survey of Sweden, he held a Swedish Research Council Professorship at Lund University and, from 1994, served as Professor of Orogen Dynamics at Uppsala University, where he was also Dean of Earth Sciences from 1996 to 2002. A Member of Academia Europaea and former President of the European Union of Geosciences, he received the European Geosciences Union Stephan Mueller Medal in 2007 and was named Swedish Geologist of the Year in 2008. His leadership of the pan-European EUROPROBE programme brought together hundreds of scientists from more than thirty countries, establishing an influential multidisciplinary framework for investigating Europe’s major tectonic structures.