可乐（英语：Cola）是黑褐色、甜味、含咖啡因的碳酸饮料，但不含酒精，非常流行。可乐主要口味包括有香草、肉桂、柠檬香味等。名称来自可乐早期的材料之一：可乐果(Kola Nuts）。最知名的可乐品牌有可口可乐和百事可乐。它最初是由一个美国药师约翰·彭伯顿发明的。可乐含有的化学物质对人体无害，因此无需担心中毒，还可以治头痛。但一项2007年的研究发现，饮用（添加天然或人工甜化剂的）可乐可导致罹患慢性肾脏疾病的危险升高。据信其与可乐中含有的磷酸成分有关。

Cola is a sweetened, carbonated soft drink, derived from drinks that originally contained caffeine from the kola nut and cocaine from coca leaves, flavored with vanilla and other ingredients. Most colas now use other flavoring (and caffeinating) ingredients with a similar taste. Colas became popular worldwide after pharmacist John Pemberton invented Coca-Cola in 1886. His non-alcoholic recipe was inspired by the coca wine of pharmacist Angelo Mariani, created in 1863.