Kyeong-Ryoon Lee is an Associate Professor at the (UST) University of Science and Technology, a Senior Researcher at the Korea Research Institute of Bioscience and Biotechnology (KRIBB), and an Adjunct Assistant Professor at the Seoul National University. He holds a Ph.D. in Pharmacy from the Seoul National University. After graduation, he was a Postdoctoral Fellow at the Korea Research Institute of Chemical Technology (KRICT) and at Rutgers University-New Brunswick. Then, he was a Principal Research Scientist at Daewoong Pharmaceuticals, a Visiting Scientist at the RIKEN, and an Adjunct Professor at the Chungnam National University. His research interests include Biopharmaceutics, Pharmacokinetics, Pharmacodynamics, Drug–Drug Interaction, Physiologically Based Pharmacokinetics, Modeling and Simulation, In Vitro–In Vivo Extrapolation, Translational Research, and Data Science.