Matsudaira Nobutsune (松平 信庸, September 22, 1844 – March 5, 1918) was a Japanese samurai of the late Edo period who served as lord of the Kaminoyama domain in Dewa Province. Succeeding to the family headship in 1862, he was lord of Kaminoyama during its involvement with the burning of the Satsuma mansion in 1868. Later joining the Ouetsu Reppan Domei, he led his domain in support of its northern neighbors. At the end of the war, he was forced to retire and have his brother Nobuyasu succeed him. In the Meiji era, Nobutsune became a viscount (子爵 shishaku) under the new nobility system.
Nobutsune died in 1918 at the age of 74.