Tazlău is a commune in Neamț County, Western Moldavia, Romania.

The commune is situated at the western edge of the Moldavian Plateau, in the foothills of the Tarcău Mountains.

It lies at an altitude of 427 m (1,401 ft), on the banks of the river Tazlău.

It neighbors the following communes: Borlești to the north, Balcani to the south, Tarcău and Zemeș to the west, Rediu and Cândești to the east.

The Tazlăul Mare oil field is located on the territory of the commune.