HMS Inflexible (1907)
 HMS Inflexible was an Invincible-class battlecruiser of the British Royal Navy. She was built before World War I and had an active career during the war. She tried to hunt down the German battlecruiser SMS Goeben and the light cruiser SMS Breslau in the Mediterranean Sea when war broke out and she and her sister ship Invincible sank the German armoured cruisers SMS Scharnhorst and SMS Gneisenau during the Battle of the Falkland Islands.