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