Cornelis Dirk (Cees) Andriesse (Leeuwarden, 21 December 1939) is a Dutch physicist, writer and historian of science.

He joined the research institute KEMA of the Dutch electricity companies in Arnhem and started a 'source-term' program, with the aim to determine which and how many radioactive substances would be released by nuclear reactors, when they become overheated.

Tiny amounts of uranium oxide, irradiated by neutrons, and thus containing fission products, were heated above 2,000 degrees.

There happened outdoors what Andriesse with his student Richard Tanke were doing inside a safe laboratory[4] His results, presented to the International Atomic Energy Agency, showed that even at very high temperatures most fission products will stay in the reactor core[5] He later cautioned for an explosion of the Petten nuclear reactor caused by a sudden break of the cooling circuit.

Commotion arose, when he expressed opinions about the safety of nuclear power plants, which were too negative in the eyes of KEMA.

He remained active at the Institute for the History and Foundations of Mathematics and Natural Sciences (IGG) of the University of Utrecht for several more years.

In his novels, he steps back from exact science and sketches poetic, often erratic images of a disordered world.