Charles Philippe Henri de Noailles (born 9 September 1808- 25 November 1854) 8th prince de Poix, from (1834) 5th duc espagnol de Mouchy, 4th duc français de Mouchy et duc de Poix, was a French nobleman.

Son of Antonin Claude Dominique Just de Noailles

Antonin Claude Dominique Just de Noailles

Antonin Claude Dominique Just de Noailles , 7th Prince of Poix then 4th Spanish Duke of Mouchy, 3rd French duke of Mouchy and duke of Poix, was a French politician.-Biography:...

 (1777–1846), duc de Mouchy, and the duchesse Mélanie de Talleyrand-Périgord (1785–1863), he was married on 6 April 1834, to Anne Marie Cécile de Noailles (1812–1848), daughter of the financier Alfred Louis Dominique Vincent de Paul de Noailles, and vicomtesse Rosalie Charlotte Antoinette Léontine de Noailles.

They had two children:

1. Antonin-Just-Léon-Marie de Noailles
   Antonin-Just-Léon-Marie de Noailles
   Antoine Just Léon Marie de Noailles 9th prince de Poix, from 6th duc espagnol de Mouchy, 5th duc français de Mouchy et duc de Poix, from 1854, was a French nobleman....
   
    (1841–1909), duc de Mouchy, prince-duc de Poix
2. François Marie Olivier Charles de Noailles (1843–1861)