Panthir (Greek: ΒΠ Πάνθηρ, "Panther") was an Aetos-class destroyer which served in the Hellenic Royal Navy from 1912 to 1946.

During the Balkan Wars, the Royal Hellenic Navy purchased only the minimum amount of ammunition, 3,000 rounds of torpedoes.

In 1919–1920, she participated in the operations in Southern Russia evacuating Greek refugees from the Russian Civil War with the battleships Kilkis and Lemnos and the destroyer Leon, remaining for 263 days in the Black Sea.

She also participated in the Second World War, after surviving the German invasion of April, 1941, Panthir was based in the Indian Ocean.

Between May and October, 1942, her armament was updated in Bombay enabling her to offer better anti-aircraft protection and anti-surface capabilities on her new missions.