Tarragon (Artemisia dracunculus) is a species of perennial herb in the sunflower family. It is widespread in the wild across much of Eurasia and North America, and is cultivated for culinary and medicinal purposes in many lands.

One sub-species, Artemisia dracunculus var. sativa, is cultivated for use of the leaves as an aromatic culinary herb. In some other sub-species, the characteristic aroma is largely absent. The species is polymorphic. Informal names for distinguishing the variations include "French tarragon" (best for culinary use), "Russian tarragon" (typically better than wild tarragon but not as good as so-called French tarragon for culinary use), and "wild tarragon" (covers various states).