Krasnoyarsk Krai (Krasnoyarskiy kray, krəsnɐˈjarskjɪj ˈkraj) is a federal subject of Russia (a krai) located in Siberia. Its administrative center is the city of Krasnoyarsk, the third-largest city in Siberia, after Novosibirsk and Omsk. Comprising half of the Siberian Federal District, Krasnoyarsk Krai is the largest krai in Russia, the second-largest federal subject in the country after neighboring Sakha, and the third-largest country subdivision by area in the world. The krai covers an area of , constituting roughly 13% of Russia's total area. Krasnoyarsk Krai has a population of 2,828,187 as of the 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 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, Kemerovo, Tomsk, Tyumen Oblasts, the Khanty-Mansi Autonomous Okrug, the Yamalo-Nenets Autonomous Okrug and the Kara Sea and Laptev Sea of the Arctic Ocean in the north.
The krai is located in the basin of the Arctic Ocean; a great number of rivers that flow through the krai drain into it eventually. The main rivers of the krai are the Yenisei, and its tributaries (from south to north): the Kan, the Angara, the Podkamennaya Tunguska, the Nizhnyaya Tunguska and the Tanama.
There are also several thousand lakes in the krai. The largest lakes include Beloye, Belyo, Glubokoye, Itat, Khantayskoye, Labas, Lama, Pyasina, Taymyr, and Yessey. The rivers and lakes are rich in fish.
The climate is strongly continental with large temperature variations during the year. Long winters and short, hot summers are characteristic for the central and southern regions where most of the krai's population lives. The territory of Krasnoyarsk Krai experiences conditions of three climate belts: arctic, subarctic, and humid continental.