Rhondda Cynon Taf is a county borough in South Wales. It has 89 scheduled monuments, seven of which cross or are on a border with a neighbouring authority. Of the 54 prehistoric sites, 40 are burial sites, with four hillforts and ten domestic and hut circle sites. There are three Roman sites, all military in purpose, and a variety of medieval mottes, churches, houses and a bridge. The 17 post-medieval sites are various forms of industrial and transport-related sites.
Scheduled monuments have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales. The list of scheduled monuments below is supplied by Cadw with additional material from RCAHMW and Glamorgan-Gwent Archaeological Trust.