Pwll-y-Wrach or Pwllywrach is a historic manor house to the east of Colwinston, Vale of Glamorgan, south Wales. The house and its Western garden house and Eastern garden house are all listed as Grade II listed buildings in their own right. The novelist Agatha Christie was a frequent visitor to the village and stayed at the house with her daughter Rosalind, son-in-law Hubert, and her only grandchild Matthew; her descendants, the Prichard family, still live at the former manor.