Willem (Wim) Betz (22 February 1943 – 8 June 2019) was a Flemish physician and professor emeritus at the Belgian university Vrije Universiteit Brussel (VUB), where he was head of the center for training in general medical practice until November 2007. Betz was a leading skeptic in Flanders and participant in the EU COST B4 Project (a European initiative for comprehensive research on complementary and alternative medicine). He was a founding member, president and vice-president of the Belgian skeptic organisation SKEPP.[1]