Three ships and a naval base of the Royal Navy have been named HMS Nelson in honour of Horatio Nelson:
- HMS Nelson was a 120-gun first rate launched in 1814. She was converted to screw propulsion and rearmed to 90 guns in 1860, and was handed over to the government of the Dominion of Victoria, Australia, in 1867. She was sold in 1898 as a storage hulk, and later used as a coal hulk, and was scrapped in 1928.
- HMS Nelson was a Nelson-class armoured cruiser, launched in 1876. She became a training ship in 1902. and she was sold as scrap in 1910.
- HMS Nelson was a Nelson-class battleship. She was launched in 1925, served during World War II, and was scrapped in 1949.
- HMS Nelson is a name used for HMNB Portsmouth.