Valea Seacă is a commune in Bacău County, Western Moldavia, Romania. It is composed of two villages, Cucova and Valea Seacă.

At the 2011 census, the commune had 3,867 inhabitants, of which 64.3% were Romanians and 35.6% Roma. At the 2021 census, Valea Seacă had a population of 3,727; of those, 50.17% were Romanians and 37.27% Roma.

Natives Andrei Ursache (born 1984), rugby union player

References