Henri Antoine Marie de Noailles (born 9 April 1890 Paris – 1 November 1947) 11th prince de Poix, from (1909) 7th duc espagnol de Mouchy, 6th duc français de Mouchy et duc de Poix, was a French nobleman.
Son of François Joseph Eugène Napoléon de Noailles (1866–1900), prince de Poix, and Madeleine Marie Isabelle Dubois de Courval (1870–1944) (daughter of Vicomte Arthur Dubois de Courval and Mary Ray; Ray (1835-1902) was born in New York City and descended from Loyalist James Boggs of Philadelphia and Thomas Cornell (settler).
He was married on 22 July 1920, to Marie de La Rochefoucauld (1901–1983).
They had three children:
Philippe François Armand Marie de Noailles (born 1922), duc de Mouchy, prince-duc de Poix
Philippine (born 1925), who married (1946) Jean-Louis Sébastien Hubert, marquis de Ganay (born 1922)
Charlotte (born 1949), who married Charles de Marly
Jacques (born 1956), who married Jacqueline Lomont (1966-1993):
Sabine (born 1931), who married (1953) Nicolas Wyrubov (born 1915)