This Special Paper introduces the results of gold exploration and research in southern Finland carried out by the Geological Survey of Finland (GTK) in two projects that were active during 1998–2002 and 2003–2007, and the recently active follow-up projects. The publication contains sixteen articles that fall under three themes. The first articles concern regional surveys and updated data on Au occurrences in southern Finland. The second theme describes selected case studies on recently reported discoveries. The third theme comprises articles presenting recent research on geophysics and geochemistry.