Small activating RNA (saRNA) molecules can induce target gene expression in a phenomenon referred to as dsRNA-induced transcriptional activation (RNAa).

Sarna may refer to:

• Sarna (Polish surname)
• Sarna, Warmian-Masurian Voivodeship (north Poland)
• SaRNA, small activating RNA
• Sarna (Punjabi surname)
• Sarna (clan), a Punjabi clan of India
• Sarnaism, the religious beliefs held by tribes in the state of Jharkhand, India, and other central Indian states
• Särna, a locality in Dalarna County, Sweden

Särna is a locality situated in Älvdalen Municipality, Dalarna County, Sweden with 719 inhabitants in 2010.

Sarna, originally Sarna, is a surname originating in the Punjab region of the South Asia.