HM Prison Prescoed (Welsh: Carchar Prescoed EF) is a Category D men's open prison, located in Coed-y-paen, three miles from Usk in Monmouthshire, Wales.

[4] In 2004 Prescoed started to hold a number of convicted sex offenders who had been transferred from HMP Usk.

Inmates are normally transferred to Prescoed from other jails (mainly Cardiff, Swansea, Parc, Earlstoke, Channings Wood and sometimes HMP Usk), to serve out the latter parts of their sentences, and re-integrate back into the community before release.

There is also a sawmill, from which wood products, sourced from a 160-acre (65 ha) woodland, are being developed by prisoners and staff.

Other facilities at the prison include a library, IT suites, gym, and a chaplaincy service.