'Guaraní' may refer to
:;Ethnography
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Guaraní, an indigenous people from South America's interior (Brazil, Argentina, Paraguay and Bolivia)
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Guaraní language, spoken in Argentina, Brazil, Bolivia and in Paraguay (where it is a co-official language)
:;Economics
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Paraguayan guaraní (plural: Paraguayan guaraníes), the currency of Paraguay
:;Geography
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Guaraní Aquifer, possibly the largest underground water reservoir in the world
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Guarani de Goiás, a small city in the Brazilian state of
Goiás
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Guarani das Missões, a city in the Missions (Missões) region of the Brazilian state of
Rio Grande do Sul
:;Literature and the Arts
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O Guarany,'' a classic of Brazilian literature by
José de Alencar
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Il Guarany, an opera by Brazilian composer
Carlos Gomes, based on the above novel
:;Sport
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Guarani Futebol Clube, a
Brazilian football (
soccer) club
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Guarany Futebol Clube, a
Brazilian football (
soccer) club
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Club Guaraní, a
Paraguayan football (
soccer) club