The Echigo-Tsumari Art Triennial is an international modern art festival held once every three years in the Niigata Prefecture, Japan. It is one of the world's largest international art festivals and a pioneer of regional art festivals held throughout Japan.

The setting is the Echigo-Tsumari region of Niigata Prefecture, one of the heaviest snowfall areas in Japan, where the population is depopulated and the population is aging. Approximately 200 pieces of work created by carving out the area are on permanent display, including outdoor sculptures that make great use of nature, and works that make use of abandoned schools, vacant houses, and tunnels.