Kets (кеты; Ket: кето, кет, денг) are a Yeniseian-speaking people in Siberia. During the Russian Empire, they were known as Ostyaks, without differentiating them from several other Siberian people. Later, they became known as Yenisei Ostyaks because they lived in the middle and lower basin of the Yenisei River in the Krasnoyarsk Krai district of Russia. The modern Kets lived along the eastern middle stretch of the river before being assimilated politically into Russia between the 17th and 19th centuries. According to the 2010 census, there were 1,220 Kets in Russia. According to the 2021 census, this number had declined to 1,088. The Ket people share their origin with other Yeniseian people and are closely related to other Indigenous people of Siberia and Indigenous peoples of the Americas. They belong mostly to Y-DNA haplogroup Q-M242. According to a 2016 study, the Ket and other Yeniseian people originated likely somewhere near the Altai Mountains or near Lake Baikal. It is suggested that parts of the Altaians are predominantly of Yeniseian origin and closely related to the Ket people. The Ket people are also closely related to several Native American groups. According to this study, the Yeniseians are linked to the Paleo-Eskimo groups. The Kets are thought to be the only survivors of an ancient nomadic people believed to have originally inhabited central and southern Siberia. In the 1960s, the Yugh people were distinguished as a separate, though similar, group. Today, Kets are the descendants of fishermen and hunter tribes of the Yenisei taiga, who adopted some of the cultural ways of those original Ket-speaking tribes of South Siberia. The earlier tribes engaged in hunting, fishing, and reindeer breeding in the northern areas. The Ket was incorporated into the Russian state in the 17th century. Their efforts to resist were unsuccessful as the Russians deported them to different places in an attempt to break up their resistance. This broke up their strictly organized patriarchal social system and their way of life disintegrated.