HMS Donegal was a 101-gun screw-driven first-rate ship of the line of the Royal Navy, launched on 23 September 1858 at Devonport Dockyard.

In November 1861 she was one of a number of ships transporting troops to Mexico, and in February 1862 she assisted the recovery of equipment and stores from the wreck of her sister HMS Conqueror.

On 28 October 1859 William Hall was awarded his Victoria Cross aboard the Donegal whilst she was anchored in Queenstown.

The Shenandoah had originally been in the Pacific Ocean when news reached her of the end of the Civil War, necessitating such a long voyage.

She remained in this role until the torpedo school moved onshore in 1923, and Donegal was sold for scrapping on 18 May 1925 to Pounds, of Portsmouth.