Senožeče was attested in historical sources as Sehenossecsch in 1217, Senosensach in 1297, and Sinesecha in 1310, among other spellings. The name is derived from the plural demonym *Sěnožęťani 'residents of a hayfield or meadow' (from the common noun *sěnožętъ '(mountain) meadow, meadow mown once a year').