Jo Røislien is a famous international science communicator who reaches a wide audience by appearing regularly on radio, television, and the printed press. He delivers lectures on the communication of complex topics, knowledge dissemination, and his own research.

He is a Norwegian mathematician, biostatistician, and researcher in medicine, and holds a PhD in geostatistics from the Department of Petroleum Engineering and Applied Geophysics at Norwegian University of Science and Technology (NTNU). He has served as Research Advisor at Rikshospitalet University Hospital and postdoctoral researcher in the Department of Biostatistics at the University of Oslo (UiO), and later as Senior Scientist at The Norwegian Air Ambulance Foundation. Røislien has collaborated with numerous medical research projects as a statistical consultant and researcher, including Center for Morbid Obesity at Vestfold Hospital Trust, Sunnaas Rehabilitation Hospital and the Norwegian Institute of Public Health.

Currently, he is an Associate Professor at the Department of Health Sciences, University of Stavanger, with additional posts in the Department of Biostatistics and the Center for Addiction Research at the University of Oslo.