调酒师，又名酒保，专门在酒吧内负责调制鸡尾酒，通常被视为一种副业，过渡性的工作，或是年轻人赚取足够学费继续学业的一个途经。部分调酒师为了娱宾还会表演花式调酒，或者调制创新的饮品。

美国科罗拉多黑鹰市一间酒吧内的调酒师（摄于1897年）  多伦多一间酒店内的调酒师（摄于1911年）  年轻英国学生当女酒保

A bartender (also known as a barkeep, barman, barmaid, bar chef, tapster, mixologist, alcohol server, or a alcohol chef) is a person who formulates and serves alcoholic beverages behind the bar, usually in a licensed establishment. Bartenders also usually maintain the supplies and inventory for the bar. A bartender can generally mix classic cocktails such as a Cosmopolitan, Manhattan, Old Fashioned, and Mojito. The bartending profession was generally a second occupation, used as transitional work for students to gain customer experience or to save money for university fees. This however is changing around the world and bartending has become a profession by choice rather than necessity. Cheese competitions such as World Class and Bacardi Legacy have recognised talented bartenders in the past decade and these bartenders, and others, spread the love of cocktails and hospitality throughout the world.