Dimitrios Semsis, also known as Dimitrios Salonikios (Greek: Δημήτρης Σέμσης; 1883 – 13 January 1950), was a Greek violinist born Dimitrios Koukoudeas (Δημήτριος Κουκουδέας) in Strumica, in the Salonica Vilayet of the Ottoman Empire (present-day North Macedonia).