Also known as the Lyon-Lamar House, the Lyon Hall is a historic home in Demopolis, Alabama. It is one of the few antebellum mansions in the city that is included in the annual candlelight home tours, which is an annual event held during the Christmas season.

The Lyon Hall was built in 1853 for George Gaines Lyon and wife, Anne Glover Lyon. George Lyon was a local attorney and the nephew of the Bluff Hall owner, Francis Strother Lyon, who is also a prominent politician and lawyer in the state.

The Lyon Hall is a Greek revival, two-story, wooden frame mansion. It is currently operated by the Marengo County Historical Society, who offers tours and rentals for the place. It was also added to the National Register of Historic Places in 1974.