(1641 – 6 May 1721) was a Roman Catholic prelate who served as Titular Bishop of Porphyreon (1692–1721).

[1] Pierre Lambert Ledrou was born in Huy, Belgium in 1641 and ordained a priest in the Order of Hermits of St. Augustine on 12 April 1664.

[2][3] On 25 June 1692, he was appointed during the papacy of Pope Innocent XII as Titular Bishop of Porphyreon.

[2][3] On 21 December 1692, he was consecrated bishop by Fabrizio Spada, Cardinal-Priest of San Crisogono, with Michelangelo Mattei, Titular Archbishop of Hadrianopolis in Haemimonto, and Giovanni Battista Visconti Aicardi, Bishop of Novara, serving as co-consecrators.

This article about a Catholic bishop from Europe is a stub.