Bolshemurtinsky District () is an administrative and municipal district (raion), one of the forty-three in Krasnoyarsk Krai, Russia. It is located in the southern central part of the krai and borders with Kazachinsky District in the north, Taseyevsky District in the east, Sukhobuzimsky and Yemelyanovsky Districts in the south, Birilyussky District in the west, and with Pirovsky District in the northwest. The area of the district is . Its administrative center is the urban locality (an urban-type settlement) of Bolshaya Murta. Population: 21,087 (2002 Census); The population of Bolshaya Murta accounts for 41.4% of the district's total population.
The district is located in the forest steppe and subtaiga natural climatic zones.
The district was founded on April 4, 1924.
As of 2013, the Head of the District and the Chairman of the District Council is Valery V. Verner.
The total length of the auto routes in the district is , of which are hard surface roads.