Cointreau is a brand of orange-flavoured triple sec liqueur produced in Saint-Barthélemy-d'Anjou, France. It is consumed as an apéritif and digestif, and is a component of several well-known cocktails. It was originally called Curaçao Blanco Triple Sec. Despite the orange bottle, Cointreau is colourless. Cointreau also produces Cointreau Noir, a blend of 70% Cointreau and 30% cognac from the House of Rémy Martin.

Triple sec is an orange-flavoured liqueur that originated in France. It usually contains 20–40% alcohol by volume.