Khentkaus I, also referred to as Khentkawes, was a Queen of Ancient Egypt during the 4th dynasty. She may have been a daughter of Pharaoh Menkaure, wife of Shepseskaf and mother of Userkaf, but this is by no means certain. Her Mastaba at Giza - tomb LG100 - is located very close to Menkaure's pyramid complex. This close connection may point to a family relationship, but it is not quite clear exactly what that relationship is.