Ruthin Union Workhouse was a workhouse on Llanrhydd Street, Ruthin, North Wales.

[1] It cost £6,050 at the time and was opened on 4 February 1837.

The work house was upgraded in 1910, on a "square" layout with separate accommodation wings for male or female, infirm or able-bodied etc.

The building radiated from a central hub.

[2] The Ruthin Union workhouse was demolished in the 1960s: some parts were incorporated into the Ruthin Community Hospital.