The Swedish Workshops on Data Science allow members of a community with common interests to meet in the context of a focused and interactive discussion. SweDS 2017, the fifth Swedish Workshop on Data Science, brings together researchers, practitioners, and opinion leaders with interest in data science. The goal is to further establish this important area of research and application in Sweden, foster the exchange of ideas, and to promote collaboration. As a followup to the very successful previous editions, held at the University of Borås, Stockholm University, Blekinge Institute of Technology and Skövde we plan two days of inspiring talks, discussion sessions, and time for networking. We invite stakeholders from academia, industry, and society to share their thoughts, experiences and needs related to data science.