Dewi Sant Hospital (Welsh: Ysbyty Dewi Sant) is a small hospital on Albert Road, in Pontypridd, Rhondda Cynon Taf, Wales.

It is managed by the Cwm Taf Morgannwg University Health Board.

[1] An infirmary and isolation hospital were built on the site in the late 19th century.

[1] The tunnel mouth of Pontypridd Graig railway station, which emerges into in the hospital car park, was last used in 1930.

[2][3] The complex joined the National Health Service as Graig Hospital in 1948.