Routable GPS map for Garmin navigation devices. Uruguay is located in southeastern South America. Uruguay is bordered by the Atlantic Ocean, Argentina to the west, and Brazil to the north. Uruguay Bordering Countries are Argentina and Brazil. Locations: Atlantic Ocean, Dayman River, Lago Rincon del Bonete, Lagoa Mangueira, Lagoa Mirim, Laguna de Rocha, Laguna Negra, Negro River, Quarai River, Queguay Grande River, Rio Arapey Grande, Rio Cebollati, Rio Cuareim, Rio Dayman, Rio de la Plata, Rio Negro, Rio Queguay Grande, Rio San Salvador, Rio Santa Lucia, Rio Tacuari, Uruguay River, Yaguaron River and Yi River.