Constantin Rădulescu-Motru (Romanian pronunciation: [konstanˈtin rəduˈlesku ˈmotru]; born Constantin Rădulescu, he added the surname Motru in 1892; February 15, 1868 – March 6, 1957) was a Romanian philosopher, psychologist, sociologist, logician, academic, dramatist, as well as left-nationalist politician. A member of the Romanian Academy after 1923, he was its vice president in 1935–1938, 1941–1944, and its president between 1938 and 1941.