Conrad Hermann Hubertus Maria Apollinaris Josten (7 June 1912 in Neuss, Germany – 10 July 1994 in Neuss), known as Kurt Josten or C. H. Josten, was a historian of science and Curator of the Museum of the History of Science, Oxford in England. In 1935 Josten achieved a doctorate in law from the, University of Erlangen. However, he gave up law due to disillusionment about the state of law in Germany under the Nazis. Also in 1935, he visited England, including Oxford.