Saint Cadoc's Hospital (Welsh: Ysbyty Sant Cadog) is a mental health facility located in Caerleon on the northern outskirts of the city of Newport, Wales.

It is managed by the Aneurin Bevan University Health Board.

Wood using a compact arrow layout and was opened as the Newport Borough Asylum in January 1906.

It joined the National Health Service as St Cadoc's Hospital in 1948.

[1] St Cadoc's Hospital has been featured as a location of episodes in the BBC television programmes Doctor Who and Torchwood.