Paranaguá is a city in the state of Paraná in Brazil. Founded in 1648, it is Paraná's oldest city. It is known for the Port of Paranaguá, which serves as both the sea link for Curitiba, 110 kilometres to the north and the capital of Paraná, and as one of the largest ports of Brazil.
As of 2013, the city has an estimated population of 148,232 and a population density of 169.92 persons per km², making it the tenth most populated city in the state of Paraná. The total area of the city is 826.674 km². The Human Development Index in 2000 was 0.782.