Elias Degiannis () (22 December 1912 – 18 June 1943) was a Greek navy officer and second in command of the resistance group PROMETHEUS. He was arrested, tortured and executed by the Germans in 18 June 1943. He was promoted posthumously to Naval Commander. In December 1980 the Hellenic Navy commissioned a Fast Attack Craft Missile Class La Combattante III in his honour.