HMS Yarmouth was a Town-class light cruiser of the Royal Navy launched on 12 April 1911 from the yards of the London & Glasgow Co. She was part of the Weymouth subgroup.

On the outbreak of the First World War, Yarmouth was on the China Station, and later in 1914, she was involved in the hunt for the German commerce raider SMS Emden.

On 28 June 1917, Royal Naval Air Service Flight Commander F. J. Rutland took off in a Sopwith Pup from a flying-off platform mounted on the roof of one of Yarmouth's gun turrets, the first such successful launch of an aircraft in history.

Edward Stafford Fitzherbert, CB, Commander-in-Chief on the Africa Station, was flown in Yarmouth temporarily.

In 1919, she stopped at Tristan da Cunha, the first ship in ten years, to inform the islanders of the outcome of World War I.