Six ships of the Royal Navy have been named HMS Colossus:
- HMS Colossus (1787) was a 74-gun Courageux-class third rate ship of the line launched in 1787 and wrecked in 1798.
- HMS Colossus (1803) was a 74-gun third rate ship of the line launched in 1803. She fought at Trafalgar and was broken up in 1826.
- HMS Colossus (1848) 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.
- HMS Colossus (1882) was a Colossus-class battleship launched in 1882 and sold in 1908.
- HMS Colossus (1910) was a Colossus-class dreadnought battleship launched in 1910. She fought at the Battle of Jutland and was scrapped in 1928.
- HMS Colossus (R15) was a Colossus-class 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.
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.