Rees Llewellyn (20 June 1851 – 21 August 1919) was an industrialist and public figure in Aberdare, South Wales and a prominent figure in the industrial history of the South Wales Coalfield.
He was the son of David Llewellyn, Parc Isaf, Treorchy, and was born at Cwmpark House, within 50 yards, near to the Ocean Colliery at that place.
In 1891 the Bwllfa Company was formed, with Llewellyn as Director and Resident Colliery Agent.
[1] Llewellyn played a prominent role in the public life of the Aberdare Valley.
In 1899 he became High Constable of Miskin Higher and succeeded Rees Hopkin Rhys as the member of Glamorgan County Council for Llwydcoed.