Mate (Spanish pronunciation: [ˈmate], Portuguese pronunciation: ['matʃi]), also known as chimarrão (Portuguese: [ʃimaˈxɐ̃w̃]) or cimarrón, is a traditional South American infused drink, particularly in Argentina, Uruguay, Paraguay, southern states of Brazil, south of Chile, the Bolivian Chaco, and to some extent, Syria and Lebanon. It is prepared from steeping dried leaves of yerba mate (llex paraguariensis, known in Portuguese as erva mate) in hot water.

Mate is served with a metal straw from a shared hollow calabash gourd. The straw is called a bombilla in some Latin American countries, a bomba in Portuguese, and a bombija or, more generally, a masassa (type of straw) in Arabic. The straw is traditionally made of silver. Modern, commercially available straws are typically made of nickel silver, called Alpaca; stainless steel, or hollow-stemmed cane. The gourd is known as a mate or a guampa; while in Brazil, it has the specific name of cuia. Even if the water is supplied from a modern thermos, the infusion is traditionally drunk from mates or cuias.