Keravnos (Greek: Α/Τ Κεραυνός, "Thunderbolt") was a destroyer that served in the Royal Hellenic Navy from 1912 to 1919.

Later, during World War I, Greece belatedly entered the war on the side of the Triple Entente and, due to Greece's neutrality the two ex-German V-class ships were seized by the Allies in October 1916, taken over by the French in November and served in the French Navy from 1917–18.

According to the Executive Officer, Gregory Mezeviris, RHN, "We stayed a few days in Constantinople and then the destroyer Keravnos was ordered to sail to the port of Vatum in the Black Sea.

This mission was finally cancelled because after sailing for a few hours we faced such adverse weather conditions that our ship with her defective engines could hardly cope with and we had to put back into port.

When the weather conditions improved, we were ordered to sail to Sebastopol to reinforce the Greek Squadron anchored there, comprising the battleship Kilkis and some destroyers.