Cynon may refer to:
Cynon Valley Cynon Valley, one of the South Wales Valleys River Cynon, the river which gives its name to the Cynon Valley Rhondda Cynon Taf, an administrative area in Wales created through the merger of the former districts of the Rhondda, Cynon Valley and Taff-Ely Cynon Valley (UK Parliament constituency), a UK constituency that serves the Cynon Valley Cynon Valley (Assembly constituency), a Welsh Assembly constituency that serves the Cynon Valley
People Cynon ap Clydno, a Welsh hero of Arthurian legend