A smoothie or smoothy is a drink made by puréeing fruit and vegetables in a blender. A smoothie often has a liquid base such as fruit juice, dairy products, such as milk, yogurt, ice cream or cottage cheese. Other ingredients are often added, including non-dairy milk, crushed ice, sweeteners (honey or sugar), vinegar, whey powder, chocolate or nutritional supplements.

Many different smoothies are part of Indian, Mediterranean, and Middle Eastern cuisine. Fruit sharbat (a popular West and South Asian drink) sometimes include yogurt and honey, too. In India, the lassi is a smoothie or milkshake comprising crushed ice, yogurt, sugar, and mango; in the south, pineapple smoothies made with crushed ice, sugar and no yogurt are common.

Health food stores on the West Coast of the United States began selling smoothies in the 1930s associated with invention of the electric blender. The actual term "smoothie" was being used in recipes and trademarks by the mid-1980s.

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