Viiratsi Parish () was a rural municipality of Estonia, in Viljandi County.
After the municipal elections held on 20 October 2013, Viiratsi Parish was merged with Paistu, Pärsti and Saarepeedi parishes to form a new Viljandi Parish around the town of Viljandi.
On 1 January 2009, it had a population of 3,743 and an area of 215.02 km<sup>2</sup>.