Henri Le Tonnelier de Breteuil (1848-1916) was a French aristocrat and politician.

[1] He was the son of Alexandre Le Tonnelier, Marquis de Breteuil (son of Achille Le Tonnelier de Breteuil), and his wife Charlotte-Amélie Fould, daughter of the financier Achille Fould.

Breteuil served as a member of the Chamber of Deputies, representing Hautes-Pyrénées.

[2] He often invited his friend Marcel Proust, who based the character of Hannibal de Bréauté in In Search of Lost Time on him.

[3] On 3 March 1891, he married the American heiress Marcelite "Lita" Garner,[4] whose sister Florence Garner married the Scottish socialite Sir William Gordon-Cumming.