Until 1 January 2007 Purhus municipality was a municipality (Danish, kommune) in the former Aarhus County on the Jutland peninsula in central Denmark.
The municipality covered an area of 169 km2, and had a total population of 8,547 (2005).
Its last mayor was Berner Nielsen, a member of the Social Democrats (Socialdemokraterne) political party.
It was merged with existing Nørhald, Randers, and a portion of each of the following municipalities— Langå, Mariager, and Sønderhald— to form an enlarged Randers municipality.
This created a municipality with an area of 793 km2 and a total population of 96,409 (2005).