HMS Dartmouth was a Town-class light cruiser built for the Royal Navy in the 1910s. She was one of the Weymouth sub-class of the Town class. The ship survived the First World War and was sold for scrap in 1930.

The Town class was a group of twenty-one light cruisers built for the Royal Navy (RN) and Royal Australian Navy (RAN) of the first half of the 20th Century. These vessels were long-range cruisers, suitable for patrolling the vast expanse covered by the British Empire. These ships, initially rated as second class cruisers, were built to a series of designs, known as the Bristol, Weymouth, Chatham, Birmingham and Birkenhead classes – all having the names of British towns except for the RAN ships, which were named after Australian cities.