Tredegar is a town and community situated on the banks of the Sirhowy River in the county borough of Blaenau Gwent, in the southeast of Wales.

Tredegar can also refer to:

Places Tredegar General Hospital Recreation Ground, Tredegar New Tredegar, a former mining town in Wales Tredegar House, a stately home in Newport, Wales Stable Block, Tredegar House Tredegar House Country Park, a park containing Tredegar House Tredegar Park, Newport Tredegarville, an area of Cardiff, Wales Tredegar Square, a Georgian square in Mile End, London

Commerce Merthyr, Tredegar and Abergavenny Railway Tredegar Corporation, a manufacturer of plastic films Tredegar Iron Works, an iron works in Richmond, Virginia, USA Lord Tredegar, Bow, a public house in London

Music Tredegar Town Band Tredegar (band), a Welsh heavy metal band Tredegar (album)

Sport Tredegar Town F.C., a football club Tredegar RFC, a rugby club Tredegar Ironsides RFC New Tredegar RFC

People Baron Tredegar, a title in the Peerage of the United Kingdom