Yoo-Seok Yoon is a Professor at the Department of Surgery, Seoul National University Bundang Hospital, Republic of Korea. Yoo-Seok Yoon started working at his current location as an Assistant Professor in 2005 and became an Associate Professor in 2012. He was later promoted to Professor in 2017. He received his medical degree from Seoul National University’s College of Medicine. During his fellowship, he trained in hepato-pancreato-biliary surgery at the Seoul National University Hospital (2002–2004) and at the Seoul National University Bundnag Hospital (2004–2005). During 2011–2012, he was a research fellow in hepato-pancreato-biliary surgery at The Johns Hopkins Hospital, USA. In addition, he is a member of multiple professional societies, including the Korean Surgical Society (1997), Korean Society of Hepato-Biliary-Pancreatic Surgery (2002), Korean Society of Endoscopic and Laparoscopic Surgeons (2002), International Hepato-Pancreato-Biliary Association (2004), Society of American Gastrointestinal and Endoscopic Surgeons (2007), and Endoscopic and Laparoscopic Surgeons of Asia (2006). His research interests include pancreatic cancer, cystic tumors of the pancreas—including IPMN—tumors of the biliary tract, and laparoscopic surgery.