Louise Levêque de Vilmorin (4 April 1904-26 December 1969) was a French woman of letters: novelist, poet, journalist.

Born in the family chateau at Verrières-le-Buisson, a suburb southwest of Paris, she was the scion of a great French seed company fortune and afflicted with a slight limp that became a personal trademark. Vilmorin was best known as a writer of delicate but mordant tales, often set in aristocratic or artistic milieus. Her most famous novel was "Madame de", published in 1951, which was made into a celebrated film in 1953 starring Charles Boyer and Danielle Darrieux and directed by Vittorio de Sica. Vilmorin's other works included "Juliette," "La lettre dans un taxi," "Les belles amours," "Saintes-Une fois," and "Intimités."

Her letters to Jean Cocteau were published to acclaim, after the deaths of both correspondents.

Vilmorin's first husband was an American real-estate heir, Henry Leigh Hunt . They married in 1925, moved to Las Vegas, Nevada, where Hunt's family owned extensive properties, and divorced in 1937. They had three daughters: Jessie, Alexandra, and Helena.

Her second husband was Count Paul Pálffy ab Erdöd , a much-married Austrian-born Slovakian playboy. They married in 1938 but soon divorced.

Vilmorin was the mistress of Graf Maria Thomas Paul Esterházy de Galántha, and, for a number of years, the mistress of Duff Cooper, the British ambassador to France. As a young woman, in 1923, she had been engaged to the novelist and aviator Antoine de Saint-Exupéry. She ended her life as the companion of the French statesman André Malraux.