Six ships of the Royal Navy have been named HMS Colossus:

  • was a 74-gun third rate ship of the line launched in 1787 and wrecked in 1798.
  • was a 74-gun third rate ship of the line launched in 1803. She fought at Trafalgar and was broken up in 1826.
  • was an 80-gun second rate ship of the line launched in 1848. She was converted to screw propulsion in 1854 and sold in 1867.
  • was a battleship launched in 1882 and sold in 1908.
  • was a dreadnought battleship launched in 1910. She fought at the Battle of Jutland and was scrapped in 1928.
  • was a light aircraft carrier launched in 1943. She was loaned to France in 1946 and renamed Arromanches. She was bought by France in 1951 and was scrapped in 1978.