The unveiling ceremony was attended by Clutha Mayor Bryan Cadogan, Clutha District Council staff and members of the McNeil clan, one of Balclutha's founding families.
A panel on the kiosk included information on James McNeil, who founded Balclutha in 1852, and his son John McNeil, first mayor of Balclutha, from 1870.
James McNeil's great-great-grandson, Douglas McNeil Washington, of Christchurch, piped the group into the cemetery.
The Clutha district was presented with a McNeil family Bible, which had belonged John McNeil's nephew, Alexander Robert McNeil (1863-1932).
The Bible will be kept at the South Otago Museum, where curator Gary Ross is working to build the museum's collection relating to Balclutha's founding families.
The unveiling was part of the Clutha District Council's programme of installing layout maps and historical information at information kiosks at cemeteries around the district.