The 2005 provincial elections of Sardinia took place on 8–9 May 2005.
All the Provinces of Sardinia, including the newly established ones (Olbia-Tempio, Medio Campidano, Ogliastra and Carbonia-Iglesias), elected their Presidents and Provincial Councils. A run-off was needed in Olbia-Tempio and took place two weeks later. The elections saw a big victory for the centre-left, which won seven provinces out of eight.