Reghiu is a commune located in Vrancea County, Romania. It is composed of eight villages: FarcaÃÂ, Jgheaburi, Piscu Reghiului, RÃÂiuÃÂi, Reghiu, ÃÂindrilari, Ursoaia, and Valea Milcovului.
The commune is located in the central-west part of the county, from the county seat, FocÃÂani, in a hilly area at the foot of the Curvature Carpathians. It lies on the banks of the Milcov River, the traditional boundary between Wallachia and Moldavia; the Reghiu River flows into the Milcov in the village Reghiu. It is crossed by the national road , which connects it to the south with AndreiaÃÂu de Jos and Nereju, and to the east with Mera, BroÃÂteni, OdobeÃÂti, and FocÃÂani (where it ends in ).
At the end of the 19th century, the villages and the current territory of the commune were part of the neighboring communes of Mera and NÃÂruja. The Socec yearbook from 1924 records the appearance of Reghiu commune in plasa Gârlele of Putna County, with 2,053 inhabitants in the villages of AndriaÃÂi and Reghiu. In 1931, the commune took its current form, comprising at the time the villages of FarcaÃÂ, Jgheaburi, Pârlita, RÃÂiuÃÂ, Reghiu, Ursoaia, Valea Boului, and Valea Milcovului.
In 1950, the commune was transferred to the NÃÂruja raion of ; two years later it became part of the FocÃÂani raion of Bârlad Region, and in 1956 it was transferred to the . The village of Valea Boului took the name of Piscu Reghiului in 1964. In 1968, Reghiu became part of Vrancea County, in its present form.
According to the 2011 census, the commune had a population of 2,126, of which 98.12% were ethnic Romanians. At the 2021 census, Reghiu had a population of 2,039, of which 94.26% were Romanians.