The Ashley Youth Detention Centre is a Youth detention centre outside Deloraine, Tasmania, Australia. It is the only such centre in Tasmania and has a capacity of 51 beds for 10‑ to 18-year-old offenders.
The site was originally an experimental agricultural school, similar to the one at nearby Hagley, that opened in 1914 as the State Farm. The experiment was not successful and the school closed. The site was subdivided in 1922 and 90 acres (36 ha) set aside for a boy's home. The original 1913 building was retained for accommodation of the boys, and cottages kept for staff. From 1869 youth offenders had been housed in the Boys' Training School in Hobart. In 1922 the Deloraine school site was reopened as the Ashley Home for Boys, taking over the Hobart facility's function. it was first opened with a focus on farm work as a reform method. It has remained as a youth detention centre since, and became known as the Ashley Youth Detention Centre in 2000.