Donegal County Museum (Irish: Músaem Chontae Dhún na nGall) is a county museum in County Donegal in Ireland. Located on the High Road in Letterkenny, the museum building first opened to the public in 1845 as the Warden's House of the Letterkenny Workhouse. The building was repurposed as a museum in the late 20th century. The purpose of Donegal County Museum is to "collect, record, preserve, and display the material evidence and associated information of the History and Heritage of County Donegal". In 2013, the then Minister for Arts, Heritage and the Gaeltacht, Jimmy Deenihan, said that the museum was among the "best in Ireland" at "dealing with the past and recognising all traditions [and diversity]".