Blaise Castle Estate is a public park near Henbury in Bristol, England. The estate includes Blaise Castle House, a Grade II* listed 18th-century mansion house; Blaise Castle, a Grade II* listed folly built in 1766; and other listed ancillary buildings including an orangery and dairy. Along with Blaise Hamlet, a group of nine small cottages around a green built in 1811 for retired employees, and various subsidiary buildings, the parkland is listed Grade II* on the Register of Historic Parks and Gardens.