HMS Formidable

{{Use dmy dates|date=January 2018}}

{{Use British English|date=January 2018}}

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Four ships of the Royal Navy have been named HMS Formidable with a fifth, the French Formidable, renamed HMS Ham after being captured and recommissioned; a sixth has been announced:

• HMS Ham (1759) was the 80-gun second rate {{ship|French ship|Formidable|1751|2}} captured from the French at the Battle of Quiberon Bay in 1759. Broken up in 1768.
• {{HMS|Formidable|1777}} was a second rate; initially of 90 guns, later increased to 98; launched in 1777. She fought at the Battle of Ushant and the Battle of the Saintes, was converted to a 74-gun third rate in 1813, and broken up later that year.
• {{HMS|Formidable|1825}} was an 84-gun second rate launched in 1825. She was lent as a training ship in 1869 and was sold in 1906.
• {{HMS|Formidable|1898}} was a {{sclass|Formidable|battleship|0}} predreadnought battleship launched in 1898 and torpedoed and sunk in 1915.
• {{HMS|Formidable|67}} was an {{sclass|Illustrious|aircraft carrier}} launched in 1939 and sold for scrap in 1953.
• HMS Formidable will be a Type 31 frigate.