Almirante Brown is a partido of the Buenos Aires Province, Argentina, located at the south of the Gran Buenos Aires urban area, at coordinates .
It has an area of <span style="white-space:nowrap">129.33 km<sup>2</sup> (49.9 sq mi)</span> and 555,731 inhabitants (), and its capital is Adrogué.
The partido is named after Irish-born General William Brown who led the Argentine navy in the Argentine War of Independence and helped the country gain its independence from the Spanish Empire.