Altamira is one of one hundred and forty-four municipalities in the state of Pará, in northern Brazil. It has an area of 159,533.73 square kilometres or 61,596.32 square miles, making it the largest municipality by area both in Pará state and Brazil, and until 2009 it was the world's largest municipal subdivision. It occupies 12.8% of the state's territory, 1.8% of Brazil's territory and 0.8% of South America.