Sienne may refer to the following:
Places Canton of Quettreville-sur-Sienne, French canton Gavray-sur-Sienne, French commune Heugueville-sur-Sienne, French commune Noues de Sienne, French commune Orval-sur-Sienne, French commune Quettreville-sur-Sienne, French commune Tourville-sur-Sienne, French commune
People Aldebrandin de Sienne, alternate name of Aldebrandin of Siena Catherine de Sienne, alternate name of Catherine of Siena
Others Sienne (river), river in France
See also Siena, an Italian town, and Siena_(disambiguation) Seine, a river in France, and Seine_(disambiguation) Syene, ancient name of Aswan, Egypt