Several ships of the British Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 have been named HMS Audacious.
was a 74-gun 3rd rate in service from 1785 to 1815. was a battleship

Battleship

A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...

 launched in 1869, converted to a depot ship in 1902, later named Fisgard then Imperieuse, and sold for breakup in 1927.

• HMS Audacious was launched in 1897 as the cargo liner
  Cargo liner
  A Cargo liner is a type of merchant ship which carried general cargo and often passengers. They became common just after the middle of the nineteenth century, and eventually gave way to container ships and other more specialized carriers in the latter half of the twentieth...
  
   SS Montcalm and changed names multiple time, including HMS Audacious when she was a dummy warship between 1914-1916, and SS Polar Chief
  SS Polar Chief
  Polar Chief was an 8,040 GRT tanker which was built in 1897 as the cargo liner Montcalm. In 1914 she was requisitioned by the Admiralty, serving initially as a troopship. In October 1914, she was converted to a dummy battleship and renamed HMS Audacious...
  
  . was also a battleship
  Battleship
  A battleship is a large armored warship with a main battery consisting of heavy caliber guns. Battleships were larger, better armed and armored than cruisers and destroyers. As the largest armed ships in a fleet, battleships were used to attain command of the sea and represented the apex of a...
  
  , launched in 1912 and sunk by a mine in October 1914.
• HMS Audacious was an initial name of aircraft carrier, of the Audacious class
  Audacious class aircraft carrier
  The Audacious class aircraft carriers were a class of ship proposed by the British government in the 1930s - 1940s.- History :The Audacious class was originally designed as an expansion of the Implacable class with double storied hangars...
  
  . The vessel was renamed HMS Eagle on 21 January 1946, two months before her launch on 19 March 1946., laid down in 2009, is an Astute-class
  Astute class submarine
  The Astute-class is the latest class of nuclear-powered fleet submarines in service with the Royal Navy. The class sets a new standard for the Royal Navy in terms of weapons load, communication facilities and stealth. The boats are being constructed by BAE Systems Submarine Solutions at...
  
  submarine currently under construction.

A 14 gun sloop captured from France in 1797, Audacieux, was commissioned into the Royal Navy as HMS Audacieux. The ship was last listed in 1801.