The Yenisei Kyrgyz were an ancient Turkic people who dwelled along the upper Yenisei River in the southern portion of the Minusinsk Hollow from the 3rd century BCE to the 13th century CE. The heart of their homeland was the forested Tannu-Ola mountain range, in modern-day Tuva, just north of Mongolia. The Sayan Mountains were also included in their territory at different times.