Long Bredy is a village and civil parish in the county of Dorset in south-west England. It lies within the West Dorset administrative district, about west of the county town Dorchester. It is sited in the valley of the small River Bride, beneath chalk hills of the Dorset Downs. In the 2001 Census the parish had a population of 202.
The environs of Long Bredy have some prehistoric history, including a burial chamber known as The Grey Mare and her Colts. The village itself is thought to have been established around the 9th century, and was mentioned in the Domesday Book. To the east of the village is Kingston Russell house, a 17th-century mansion.