Sirna
# Sirna

Sirna may refer to:

* Sírna, legendary High King of Ireland
* Șirna, a commune in Prahova County, Romania
* Sirna, Iran, a village in Markazi Province, Iran
* Small interfering RNA (siRNA)
* Syrna, also spelled Sirna, Greek village
* Syrna (island), also spelled Sirna, Greek island
* Sirna Therapeutics
