Robert Jan Verbelen (April 5, 1911, Herent, Belgium – c. September 1990) was a Belgian Nazi collaborator. After the liberation of Belgium in the Second World War, Verbelen fled through Germany to Austria, where for eight years he worked for the Counter Intelligence Corps of the US Army, while he already was convicted as war criminal in Belgium. He obtained Austrian citizenship in 1959. He was charged with five murders in a 1965 war crime trial in Austria, but was acquitted of war crimes.