Şimişna (Hungarian: Semesnye) is a commune located in Sălaj County, Romania. It is composed of two villages, Hăşmaş (Alsóhagymás) and Şimişna. These were part of Rus Commune until 2002, when they were split off.
Coordinates: 47°13′N 23°37′E / 47.217°N 23.617°E / 47.217; 23.617