Zabaione (Italian pronunciation: [dzabaˈjoːne]) or zabaglione (UK: , US: , Italian: [dzabaʎˈʎoːne]) is an Italian dessert, or sometimes a beverage, made with egg yolks, sugar, and a sweet wine (usually Moscato d'Asti or Marsala wine). Some versions of the recipe incorporate spirits such as cognac. The dessert version is a light custard, whipped to incorporate a large amount of air. Since the 1960s, in restaurants in areas of the United States with large Italian populations, zabaione is usually served with strawberries, blueberries, peaches, etc., in a champagne coupe. In France, it is called sabayon, while its Italian name is zabaione or zabaglione (or zabajone, an archaic spelling).

The dessert is popular in Argentina and Uruguay, where it is known as sambayón (from the Piedmontese sambajon) and is a popular ice cream flavour. In Colombia, the name is sabajón. In Venezuela, there is also a related egg-based dessert drink called ponche crema. This is consumed almost exclusively during Christmas time.