Pârjol is a commune in Bacău County, Western Moldavia, Romania. It is composed of nine villages: Băhnășeni, Bărnești, Băsăști, Câmpeni, Hăineala, Hemieni (established in 2003), Pârjol, Pustiana and Tărâța. At the 2011 census, the commune's 5404 inhabitants were 94.2% Romanian and 3.53% Hungarian. At the 2002 census, they were 64.2% Romanian Orthodox, 35% Roman Catholic, and 0.8% Old Calendar Orthodox.

The village of Pustiana (Hungarian: Pusztina) was first mentioned in 1792. It was established by Székely who fled from Transylvania after the Siculicidium. In 2002, it had 1961 people, broken down as follows: Romanians (78.99%), Hungarians (17.24%), Csangos (4.89%).