Stefan Koldehoff, born 1967 in Wuppertal, is a journalist, art market expert and non-fiction author. After initially working as a freelance journalist for newspapers FAZ and taz and broadcaster WDR, he joined the art magazine “art” in Hamburg as an editor and subsequently assistant chief editor. Today he is a cultural editor for radio broadcaster Deutschlandfunk in Cologne and writes for the newspapers Die Zeit and FAZ. He has published numerous non-fiction books on the art market, art forgery and art history. In March 2017 he became Editor in Chief of the daily media programme @mediasres.