François Joseph Eugène Napoléon de Noailles

François Joseph Eugène Napoléon de Noailles (25 December 1866 in Paris – 8 May 1900 in Paris) 10th prince de Poix, was a French nobleman.

Son of Antonin-Just-Léon-Marie de Noailles (1841–1909), duc de Mouchy, and the princesse Anne Murat (1841–1924), he was married on 29 June 1889, to Madeleine Marie Isabelle Dubois de Courval (1870–1944).

They had four children:

1. Henri-Antoine-Marie de Noailles (1890–1947), duc de Mouchy, who married (in 1920) Marie de La Rochefoucauld (1901–1983)
2. Arthur Anne Marie Charles de Noailles (1891–1981), vicomte de Noailles, who married (in 1923) Marie-Laure de Noailles (1902-1970)
3. Antoine Henri Alexis Marie de Noailles (né et mort en 1893)
4. Philippine Marie Cécile Douce de Noailles (1898–1991), who married (in 1917) Eugène, 11th Prince of Ligne (1893–1960)