Marnier is owned by the Marnier Lapostole group, born from the marriage in 1876 of Louis-Alexandre Marnier and the granddaughter of Jean-Baptiste Lapostole, a liqueur producer who had opened a distillery in Beauphle-le-Château in 1827. A few years later, in 1890, Louis-Alexandre invented a cognac and bitter orange and cognac liqueur renamed Grand Marnier by the famous hotel-owner César Ritz, having first being released as Curaçao Marnier. The liqueur quickly became a hit and left a lasting impression on consumers. In 2016, the brand was bought by the Campari group.

Marnier XO cognac is aged for at least ten years in oak casks. The grapes used in its production were grown in Grande Champagne, the most prestigious cru in the appellation, known for producing cognac with incredible finesse.