Astragalus tennesseensis is a species of flowering plant in the legume family known by the common name Tennessee milkvetch. It is native to the United States, where it is known from Illinois, Indiana, Tennessee and Alabama. Most of the occurrences are in Tennessee. This plant produces cream-colored flowers in April and May. The seedlings grow slowly and several years pass before the plants reach reproductive maturity. The species is adapted to drought, remaining metabolically active in habitat that is dry over the summer.