Pierre Marie Léon Augustin Plateau (January 10, 1924 – April 26, 2018)[1] was a French prelate of the Roman Catholic Church.

Plateau was born in Saint-Servan and ordained a priest on June 28, 1947.

Plateau was appointed auxiliary bishop to the Archdiocese of Rennes as well as Titular bishop of Gunela on February 2, 1979, and was consecrated on April 22, 1979.

As Archbishop he welcomed the Little Sisters Disciples of the Lamb to the archdiocese.

This article about a French Catholic bishop or archbishop is a stub.