In the pottery of ancient Greece, a kylix ( KY-liks, KIL-iks; Ancient Greek: κύλιξ, pl. κύλικες; also spelled cylix; pl.: kylikes KY-lih-keez, KIL-ih-keez) is the most common type of wine-drinking cup. It has a broad, relatively shallow, body raised on a stem from a foot and usually two horizontal handles disposed symmetrically. The main alternative wine-cup shape was the kantharos, with a narrower and deeper cup and high vertical handles.

The almost flat interior circle of the base of the cup, called the tondo, was generally the primary surface for painted decoration in the black-figure or red-figure pottery styles of the 6th and 5th century BC, and the outside was also often painted. As the representations would be covered with wine, the scenes would only be revealed in stages as the wine was drained. They were often designed with this in mind, with scenes created so that they would surprise or titillate the drinker as they were revealed.