Johannes "Jos" Lelieveld (born July 25, 1955) is a Dutch atmospheric chemist. Since 2000, he has been a Scientific Member of the Max Planck Society and director of the Atmospheric Chemistry Department at the Max Planck Institute for Chemistry in Mainz. He is also professor at the University of Mainz and at the Cyprus Institute in Nicosia. Biography Lelieveld studied biology at the Leiden University, the Netherlands. He graduated at the University of Leiden from the faculty of Mathematics and Natural Sciences, and the Free University of Amsterdam, in 1984 and received his Ph.D. from the faculty of Physics and Astronomy at the Utrecht University in 1990. His doctoral supervisor was Nobel laureate Paul J. Crutzen and his thesis was entitled "The role of clouds in tropospheric chemistry". From 1984 until 1987 he worked as a research assistant at Geosens B.V. in Rotterdam to investigate transboundary air pollution. Subsequently, he became research scientist at the Atmospheric Chemistry Department of the Max Planck Institute for Chemistry (MPIC) in Mainz from 1987–1993. In 1991, he was visiting scientist at the International Meteorological Institute at the University of Stockholm, followed by a stay at the Scripps Institution of Oceanography, University of California, San Diego in 1992. In 1993 Lelieveld returned to the Netherlands, accepting a professorship in “Air Quality” at Wageningen University. From 1996 to 2000 he was professor in “Atmospheric Physics and Chemistry” at University of Utrecht. In 1997 he became founding director of the international research school COACh (Cooperation on Oceanic, Atmospheric and climate Change studies). In 2000, Jos Lelieveld returned to the Max Planck Institute for Chemistry in Mainz as scientific member of the Max Planck Society and director, succeeding Paul J. Crutzen as director of the Atmospheric Chemistry Department. Since 2000 he is spokesperson of the Paul Crutzen Graduate School (PCGS) on Atmospheric Chemistry and Physics in Mainz and since 2008 he is co-affiliated at the Cyprus Institute in Nicosia. He is co/author of over 400 publications, co-editor of several scientific journals, as well as member of various international committees. In 2015 he was elected as member of the German National Academy of Sciences Leopoldina., in 2016 he received an honorary doctorate and professorship from the University of Crete, and was elected as member of the International Silk Road Academy of Sciences, China. In 2017 he was appointed Fellow of the Royal Society of Chemistry, and in 2018 Fellow