Guy Henry Ourisson (March 26, 1926 – November 4, 2006) was a French chemist. He was vice president and later president of the Academy of Sciences.

In 1952 he got a PhD from Harvard University. In 1954, he got a doctorate in physics from the Sorbonne under the direction of G. Dupont. At the University of Strasbourg, he was appointed as a lecturer in 1955, professor in 1958. He became a retired professor in 1995.

He died, aged 80, in Strasbourg.

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