Liisa Oviir (born 1 March 1977) is an Estonian lawyer and politician who was Estonia's Minister of Entrepreneurship from 2015 to 2016.

Oviir has graduated from the Faculty of Law of the University of Tartu in 2000.

Her father's grandfather was pastor Madis Oviir.

From 1997–1998, Liisa Oviir served as a referent in the Estonian Embassy in London.

On 14 September 2015, Oviir became the Minister of Entrepreneurship in Taavi Rõivas' second cabinet.