Adna

ADNA or Adna may refer to:


 * Adna (given name)
 * A-DNA
 * Adna, Washington
 * Al-Tagr al-Adna, the Arabic name for the Lower March of Al-Andalus
 * aDNA, ancient DNA
 * Athletic DNA, apparel company
 * Alternate spelling of Saint Ada
 * Adna (crustacean), a genus of barnacles