Mount Gambier Gaol is a heritage-listed former prison and now converted accommodation and events venue in Mount Gambier, South Australia.

It is listed on the South Australian Heritage Register.

[3] The gaol closed in 1995, when the new Mount Gambier Prison opened on a different site.

[5] In 2010, it was taken over and thoroughly restored as a hotel and a wedding and events venue, transforming former cells into rooms for guests to stay in.

This article about a building or structure in South Australia is a stub.