Nămoloasa is a commune in Galați County, in the Western Moldavia region of Romania. It is composed of three villages: Crângeni, Nămoloasa, and Nămoloasa-Sat. The commune is located in the south-west of the county, on the border with Brăila County and Vrancea County, at a distance of 50 km from the county seat, Galați. Nămoloasa lies on the right bank of the river Siret, which separates it from the rest of Galați County; the commune can be accessed only through Vrancea County, where there is a bridge over the Siret. Nămoloasa is geographically part of the strategic Focșani Gate. Nămoloasa was also part of the 19th century Focșani–Nămoloasa–Galați line built to guard this area more properly.