Gilfach Goch, (English: Red Nook) is a small former coal mining village in the Borough of Rhondda Cynon Taff, South Wales, near the larger community of Tonyrefail. It is situated in the Cwm Ogwr Fach (Small Ogmore Valley) between the Cwm Ogwr Fawr (Large Ogmore Valley) to the west and the Cwm Rhondda (Rhondda Valley) to the east.