Lungo (Italian for "long") is a coffee beverage made by using an espresso machine to make an Italian-style coffee – short black (a single espresso shot) with more water (generally twice as much), resulting in a larger coffee, a lungo.

A normal serving of espresso takes from 18 to 30 seconds to pull, and fills 25 to 60 millilitres, while a lungo may take up to a minute to pull, and might fill 130 to 170 millilitres. Extraction time of the dose is determined by the variety of coffee beans (usually a blend of Arabica and Robusta), their grind and the pressure of the machine. It is usually brewed using an espresso machine but with two or three times the amount of water to the same weight of coffee to make a much longer drink.

In French it is called café allongé.