A series of biennial workshops on hot subdwarf stars started in 2003. The aim of these workshops is to disseminate recent results on the properties, formation, and evolution of hot subdwarf stars and related objects, and to assess the impact of these results on other areas of astrophysics.This sixth meeting on Hot Subdwarf Stars and Related Objects is organized by the Steward Observatory and the University of Arizona and will be held in Tucson, Arizona, United States, from May 19-24, 2013.