Sărmaș is a commune located in Harghita County within the Transylvania region of Romania. It serves as an administrative division composed of five distinct villages: Hodoșa (Gyergyóhodos), Fundoaia (Fundoja), Platonești (Kerekfenyő), Runc (Runk), and Sărmaș.
The demographic makeup of the commune is characterized by a majority population of ethnic Romanians. The area functions as a rural settlement organized around these five constituent villages in the eastern part of the county.