Harku Prison () was an Estonian prison. The prison was located in Harku, Harju County.
The prison was established in 1926.
In 1965, the prison was adapted to a women's prison. In 2011, Harku Prison was merged with Murru Prison. In 2016, Harku and Murru Prison merged with Tallinn Prison. Prisoners were transported to Tallinn, Tartu and Viru Prison.
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