Krasnoyarsk Krai (Russian: Красноя́рский край, tr. Krasnoyarsky kray; IPA: [krəsnɐˈjarskʲɪj ˈkraj]) is a federal subject of Russia (a krai), with its administrative center in the city of Krasnoyarsk—the third-largest city in Siberia (after Novosibirsk and Omsk). Krasnoyarsk Krai is the largest krai in the Russian Federation, the second largest federal subject (after the Sakha Republic), and the third largest subnational governing body by area in the world. The krai covers an area of 2,339,700 square kilometers (903,400 sq mi), which is nearly one quarter the size of the entire country of Canada (the next-largest country in the world after Russia), constituting roughly 13% of the Russian Federation's total area and containing a population of 2,828,187, or just under 2% of its population. (2010 Census).

The krai lies in the middle of Siberia, and occupies nearly half of the Siberian Federal District, almost splitting it in half, stretching 3,000 km from the Sayan Mountains in the south along the Yenisei River to the Taymyr Peninsula in the north. It borders (counting clockwise from the sea) the Sakha Republic, Irkutsk, the Tuva Republic, the Republic of Khakassia, and Kemerovo, Tomsk, and Tyumen Oblasts, and the Kara Sea and Laptev Sea of the Arctic Ocean in the north.