A margarita is a cocktail consisting of tequila, triple sec, and lime juice. Some margarita recipes include simple syrup as well and are often served with salt on the rim of the glass. Margaritas can be served either shaken with ice, without ice, or blended with ice. Most bars serve margaritas in a stepped-diameter variant of a cocktail glass or champagne coupe called a margarita glass. The margarita is one of the world's most popular cocktails and the most popular tequila-based cocktail.

Tequila is a distilled beverage made from the blue agave plant, primarily in the area surrounding the city of Tequila 65 km (40 mi) northwest of Guadalajara, and in the Jaliscan Highlands of the central western Mexican state of Jalisco.