Gianfranco Ganau (born 3 March 1955) is an Italian medic and politician who served as Mayor of Sassari from 2005 to 2014.

Graduated in Medicine from the University of Sassari, Ganau began his career as a cardiologist and became responsible for the emergency medical services in the province of Sassari and the province of Nuoro.

A member of the Democratic Party of the Left, in 1995 Ganau was elected city councilor of Sassari and lead till 2000 the Environmental Commission of the City Council.

In 2005, Ganau became the centre-left candidate for the office of Mayor of Sassari and won at the first round with the 58% of the votes.

[3] In 2014, Ganau left his mayoral office, one year before the natural end of his term, in order to run at the Sardinian regional election for the Democratic Party.