François XIV Marie Auguste Armand Emilien de La Rochefoucauld, 9th Duke of La Rochefoucauld (17 December 1794 – 11 December 1874) was a French aristocrat.

Among his siblings were Count Olivier de La Rochefoucauld (who married Rosine Cuillier-Perron, a daughter of Gen. Pierre Cuillier-Perron)[1][2] Countess Sophie Francoise de La Rochefoucauld (who married Armand, Marquis de Castelbajac),[3] Count Charles Frédéric de La Rochefoucauld (who married Anne Charlotte Cuillier-Perron, also a daughter of Gen. Pierre Cuillier-Perron),[1] Count Hippolyte de La Rochefoucauld (who married Marie du Roux, a daughter of Anatole du Roux),[3] and Countess Frances "Fanny" de La Rochefoucauld (who married Count Armand Alexis de Montault, but was one of the mistresses of Anatoly Nikolaievich Demidov, 1st Prince of San Donato, and bore him an illegitimate child).

[3] His maternal grandparents were François Baron de Tott and Marie Rambaud and his maternal aunt was the well known French painter Sophie de Tott.

[4] Upon his father's death on 3 September 1848, he succeeded as the 9th Duke of La Rochefoucauld.

He was made a Knight of the Order of Saint Louis and an Officer of the Legion of Honour.