Owing to the high polarisability of the chalcogens, sulphur or selenium, chalcogenide glasses show higher ionic conductivity than their oxide counterparts. In this chapter, methods for preparing ion conducting chalcogenide glasses and techniques used to characterise ion diffusion in these glasses will first be described. Academic research aiming at getting an insight on both composition/structure/property relationships and ion dynamics in these glasses will then be developed. Finally, the last section will be devoted to a brief summary of the main applications of ion conducting chalcogenide glasses which includes development of solid state batteries, development of ionic memories for data storage and development of sensors for environmental control.