Pierre Jacquinot (18 January 1910 – 22 September 2002) was a French physicist.

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Jacquinot was a PhD student of Aimé Cotton.^[1] He was director of Laboratoire Aimé-Cotton during almost 20 years (1951-1962 and 1969-1978). From 1962 to 1969 he was appointed director general of CNRS.^[2]

In 1966 he entered the French Academy of Sciences. He became its president from 1980 to 1982.

• Jacquinot's advantage
• 1950: Fernand Holweck Medal and Prize
• 1976: Three Physicists Prize
• 1978: CNRS Gold medal