Murdoch was well known for her philanthropy and remained active late into her life.
"Throughout her life, our mother demonstrated the very best qualities of true public service," Rupert Murdoch said in a statement published in the News Corp.-owned Wall Street Journal. "Her energy and personal commitment made our country a more hopeful place and she will be missed by many."
Besides her media mogul son, other survivors include two daughters and many grandchildren and great-grandchildren. Her husband, Keith Murdoch, died in 1952.