Ernest Augustus
Ernest Augustus or Ernst August may refer to:
Royalty
House of Hanover
- Ernest Augustus, Elector of Hanover, father of King George I of Great Britain
- Ernest Augustus, Duke of York and Albany, Prince-Bishop of Osnabrück, son of the previous
- Ernest Augustus, King of Hanover, son of King George III of the United Kingdom
- Ernest Augustus, Crown Prince of Hanover,, son of George V of Hanover
- Ernest Augustus, Duke of Brunswick, son of the previous
- Prince Ernest Augustus of Hanover , son of the previous
- Prince Ernst August von Hannover, son of the previous
- Prince Ernst August of Hanover, son of previous
House of Wettin
- Ernest Augustus I, Duke of Saxe-Weimar-Eisenach
- Ernest Augustus II, Duke of Saxe-Weimar-Eisenach, son of the previous
Other
- Ernst August, a ship named after Ernest Augustus, King of Hanover