Bedwellty is a small village in Caerphilly County Borough in south Wales. The village stands on a ridge of high ground between the Rhymney and Sirhowy valleys. The village comprises St Sannan's parish church, public house and a few houses. The register of St Sannan's Church dates from 1624, which qualifies Bedwellty as an ancient parish. Historically the parish lay in the county of Monmouthshire, the hundred of Wentloog, Tredegar County Court District, the rural deanery of Bedwellty, the archdeaconry of Monmouth and the diocese of Llandaff. Several towns based on the iron industry expanded within the parish boundary, including from west to east, Rhymney, Tredegar and Ebbw Vale, which gradually gained administrative independence from Bedwellty between the 1870s and 1890s. A Bedwellty Local Government District was established for the rest of the parish in 1891, becoming an urban district in 1894.

Until 1974, Monmouthshire, also formerly known as the County of Monmouth, was an administrative county in the south-east of Wales, on the border with England, and later classed as one of the thirteen historic counties of Wales. Its area now corresponds approximately to the present principal areas of Monmouthshire, Blaenau Gwent, Newport and Torfaen, and those parts of Caerphilly and Cardiff east of the Rhymney River.