
The Caledonia-class ships of the line were a class of nine 120-gun first rates, designed for the Royal Navy by Sir William Rule. A tenth ship was ordered on 29 October 1827 to the same design, but was launched in 1833 as Queen to a fresh design by Sir William Symonds.

HMS Britannia was a 120-gun first-rate ship-of-the-line of the Royal Navy, laid down in 1813 and launched on 20 October 1820.

HMS Caledonia was a 120-gun first-rate ship of the line of the Royal Navy, launched on 25 June 1808 at Plymouth. She was Admiral Pellew's flagship in the Mediterranean.

HMS Neptune was a 120-gun first rate ship of the line of the Royal Navy, launched on 22 September 1832 at Portsmouth.

HMS Prince Regent was a 120-gun first rate three-decker ship of the line of the Royal Navy, launched on 12 April 1823 at Chatham.

HMS Royal George was a 120-gun first-rate ship of the line of the Royal Navy, launched on 22 September 1827 at Chatham Dockyard.

HMS Royal William was a 120-gun first rate ship of the line of the Royal Navy, launched on 2 April 1833 at Pembroke Dock.

HMS St George was a 120-gun first rate ship of the line of the Royal Navy, launched on 27 August 1840 at Plymouth.

HMS Trafalgar was a 120-gun first-rate ship of the line of the Royal Navy, launched on 21 June 1841 at Woolwich Dockyard. HMS Trafalgar was the last ship to complete the successful Caledonia class.

HMS Waterloo was a 120-gun first-rate ship of the line of the Royal Navy, launched on 10 June 1833 at Chatham.