Pierre-Louis Charles de Failly (21 January 1810 – 15 November 1892) was a French general. He was born in Rozoy-sur-Serre, Aisne, the son of Count Charles-Louis de Failly (descendant of a family of ancient nobility from Lorraine), and of Sophie Desmons de Maigneux. He was educated at the Saint-Cyr and entered the army in 1828. The rest of his life was spent in retirement. He died at Compiègne, aged 82. Failly wrote Campagne de 1870. Opérations et marches du 5ème corps jusqu'au 31 août (Brussels, 1871).