Paraguay , officially the Republic of Paraguay (Spanish: República del Paraguay [reˈpuβlika ðel paɾaˈɣwai], Guaraní: Tetã Paraguái [teˈtã paɾaˈɣwaj]), is a landlocked country in South America. It is bordered by Argentina to the south and southwest, Brazil to the east and northeast, and Bolivia to the northwest. Paraguay lies on both banks of the Paraguay River, which runs through the center of the country from north to south. Due to its central location in South America, it is sometimes referred to as Corazón de América, or the Heart of America.