The Constitution of the State of Tennessee defines the form, structure, activities, character, and fundamental rules (and means for changing them) of the U.S. State of Tennessee.

The original constitution of Tennessee came into effect on June 1, 1796, concurrent with the state's admission to the Union. A second version of the constitution was adopted in 1835. A third constitution was adopted in 1870 and is the one still in use today, with subsequent amendments.