Jan Zweyer (born December 12, 1953, in Frankfurt (Main))) is a German writer. Jan Zweyer is only his pen name. His real name is Rüdiger Richartz.
He first graduated in architecture and then in social sciences and worked as scientific clerk. After that he worked as a freelance journalist. He has been working for an international industrial company for several years and only writes in his leisure. Zweyer writes detective stories which deal in the Ruhr and are very popular in Northrhine-Westphalia because of its naturalistic descriptions.