A decanter is a vessel that is used to hold the decantation of a liquid which may contain sediment. Decanters are normally used as serving vessels for wine. Decanters vary in shape and design. They are usually made of an inert material and will hold at least one standard bottle of wine (0.75 litre). A similar kind of vessel, the carafe /kəˈræf/, is used for serving wine as well as other drinks, but is not supplied with a stopper.

Decanters are very useful in cold brew coffee in order to maintain a high TDS. Because cold brew has an inherently low TDS, a paper filter is avoided for this coffee brewing method. In order to increase the clarity of the final cup, coffee is filtered in decanters to allow sediments to settle.