The mother of Zeus in Greek mythology is Rhea. Rhea is one of the Titans and represents the maternal aspect of divine power. She is known for hiding Zeus from his father, Cronus, who feared his children would overthrow him. By saving Zeus, Rhea contributed to the eventual rise of the Olympian gods, allowing Zeus to fulfill his role as the chief deity. Her importance in the mythological hierarchy highlights the themes of protection and the struggles against tyranny.