Ernest Louis Octave Courtot de Cissey (; 1810–1882)<!--full dates in infobox--> was a French general and Prime Minister.
Biography
Ernest Courtot de Cissey was born in Paris, educated at the Prytanée National Militaire and, after passing through St Cyr, entered the army in 1832, becoming captain in 1839.
He saw active service in Algeria, and became chef d'escadron in 1849 and lieutenant-colonel in 1850. He took part as a colonel in the Crimean War, and after the battle of Inkerman received the rank of general of brigade.
In 1863 he was promoted general of division. When the Franco-German War broke out in 1870, de Cissey was given a divisional command in the Army of the Rhine, and he was included in the surrender of Bazaine's army at Metz. He was released from captivity only at the end of the war, and on his return was at once appointed by the Versailles government to a command in the army engaged in the suppression of the Commune.