Romorantin-Lanthenay (French pronunciation: [ʁɔmɔʁɑ̃tɛ̃ lɑ̃tənɛ]), commonly known as Romorantin, is a commune and town in the Loir-et-Cher department, administrative region of Centre-Val de Loire, France. It is the capital city of the natural region of Sologne.