Dr. Katarina Hanséus is the focus of our fourth in a series of interviews in Cardiology in the Young entitled, “Global Leadership in Paediatric and Congenital Cardiac Care”. Dr. Hanséus was born in Malmö, Sweden. She attended undergraduate school in her home town in Malmö, Sweden, graduating in 1974. Dr. Hanséus then went on to complete medical school at University of Lund in Lund, Sweden, graduating in 1980, where additionally she completed a Doctoral Dissertation in the evaluation of cardiac function and chamber size in children using Doppler and cross-sectional echocardiography. Under the Swedish Board of National Welfare, Dr. Hanséus completed her authorisation as a paediatrician in 1986, followed by her authorisation as a paediatric cardiologist in 1988, at University of Lund. She was appointed head of Paediatric Cardiology in 2000 at the Children’s Heart Center, Skane University Hospital, Lund, Sweden. The programme at Lund serves as one of the two national referral centres for comprehensive paediatric and congenital cardiac care, including paediatric cardiac surgery, in Sweden. From 2006 to 2013, she served as the clinical and administrative head of the Department of Neonatology, Paediatric Surgery, Paediatric Intensive Care, Paediatric Cardiology, and Paediatric Cardiac Surgery, returning as the head of Paediatric Cardiology in 2013, for which she currently holds the position.Dr. Hanséus is a recognised leader in the field of Paediatric Cardiology and has been involved in leadership within the Swedish Pediatric Society, the Swedish Association for Pediatric Cardiology, and the Association for European Paediatric and Congenital Cardiology throughout her career. Within the Association for European Paediatric and Congenital Cardiology, she served as the Secretary General from 2011 to 2016, the President Elect in 2018, and is the current President serving from 2019 until 2022. This article presents our interview with Dr. Hanséus, an interview that covers her experience as a leader in the field of Paediatric Cardiology, including the history and goals of the Association for European Paediatric and Congenital Cardiology, and her role and vision as their current President.