Almirante Brown Department is the westernmost department of Chaco Province in Argentina.
The provincial subdivision has a population of about 28,000 inhabitants in an area of 17,276 km<sup>2</sup>, and its capital city is Pampa del Infierno, which is located around 1,265 km from the Capital federal.
The department is named in honour of William Brown (1777 -1857), the Irish born commander in chief of the Argentine Navy.
The city of Pampa del Infierno hosts the annual Fiesta Provincial del Chivo (Provincial Goat Festival).