Kets (Russian: Кеты; Ket: денг) are a Siberian people who speak the Ket language. In the Russian Empire, they were called Ostyaks, without differentiating them from several other Siberian peoples. Later they became known as Yenisey 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.