Nicole Marie Eaton (born January 21, 1945) is a Canadian former politician and a Conservative member of the Senate of Canada. A fundraiser for the Conservative Party, she was appointed on the advice of Stephen Harper to the Senate on December 22, 2008, her term starting on January 2, 2009. She was a trustee of the Royal Ontario Museum (ROM) from 1983 to 1989 and a director of the ROM Foundation from 1996 to 2002. She retired from the Senate upon reaching the mandatory retirement age of 75 on January 21, 2020. She served as Speaker Pro Tempore of the Canadian Senate from 2015 until her retirement from the Senate.