Baron Swansea, of Singleton in the County of Glamorgan, is a title in the Peerage of the United Kingdom and held by a branch of the Vivian family. It was created on 9 June 1893 for the industrialist Sir Henry Vivian, 1st Baronet. He had already been created a Baronet, of Singleton in the County of Glamorgan, on 13 May 1882. He was succeeded by his eldest son, the second Baron. On his death the titles passed to his half-brother, the third Baron. As of 2014 the titles are held by the latter's grandson, the fifth Baron, who succeeded his father in 2005.