Seven ships of the Royal Navy have borne the name HMS Niger after the Niger River, whilst another was planned.

• HMS Niger (1759) was a 33-gun fifth rate launched in 1759, reduced to sixth rate, converted to a prison ship in 1810, and renamed Negro in 1813. She was sold in 1814.
• HMS Niger (1813) was a 38-gun fifth rate, launched in 1813 and broken up in 1820.
• HMS Niger (1846) was a wood screw sloop launched in 1846 and sold in 1869.
• HMS Niger (1880) was a composite paddle vessel launched in 1880, renamed Cockatrice in 1881, Moorhen in 1896, and sold in 1899.
• HMS Niger (1892) was a torpedo gunboat launched in 1892, converted to a minesweeper in 1909, and sunk in 1914 by the German submarine U-12 near Deal.
• HMS Niger (J73) was a Halcyon-class minesweeper launched in 1936 and sunk by a mine near Iceland in 1942.
• HMS Niger was to have been an Algerine-class minesweeper. She was laid down in 1944, but was cancelled two months later.
• HMS Niger (J442) was an Algerine-class minesweeper, launched in 1945, and scrapped in 1966.

• Colledge, J. J.; Warlow, Ben (2006) [1969]. Ships of the Royal Navy: The Complete Record of all Fighting Ships of the Royal Navy (Rev. ed.). London: Chatham Publishing. ISBN 978-1-86176-281-8.
• "HMS Niger (i) (J 73)". Uboat.net. Retrieved 26 January 2007.
• "HMS Niger (iii) (J 442)". Uboat.net. Retrieved 26 January 2007.

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.