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).

Tarragon grows to 120–150 cm (47–59 in) tall, with slender branched stems. The leaves are lanceolate, 2–8 cm (0.79–3.15 in) long and 2–10 mm broad, glossy green, with an entire margin. The flowers are produced in small capitulae 2–4 mm diameter, each capitulum containing up to 40 yellow or greenish-yellow florets. French tarragon, however, seldom produces any flowers (or seeds). Some tarragon plants produce seeds that are generally only sterile. Others produce viable seeds. Tarragon has rhizomatous roots and it readily reproduces from the rhizomes.

The Tarragon Theatre is a theatre in Toronto, Canada, and one of the main centers for contemporary playwriting in the country. Located near Casa Loma, the theatre was founded by Bill and Jane Glassco in 1970. Bill Glassco was the artistic director from 1971 to 1982. In 1982, Urjo Kareda took over as artistic director and remained in that role until his death in December 2001. Richard Rose was appointed artistic director in July 2002, and Camilla Holland was appointed general manager in July 2006.

In 1987, Tarragon purchased and renovated the building that has been its home since 1971. There are two playing spaces: Mainspace (205 seats), The Extra Space (113 seats).

Tarragon is well known for its development, creation and encouragement of new work. Over 170 works have premiered at Tarragon. Playwrights who have premiered their work here include Morwyn Brebner, David French, Michael Healey, Joan MacLeod, Morris Panych, James Reaney, Jason Sherman, Brendan Gall and Judith Thompson.