Marie Therese O'Brien Tehan (19 June 1940, Melbourne, Victoria – 31 October 2004, Nagambie, Victoria) was an Australian parliamentarian and lawyer.A member of the Liberal Party, Marie Tehan served in both Houses of the Victorian Parliament. She was the member for Central Highlands in the Legislative Council from 1987 to 1992 and for Seymour in the Legislative Assembly from 1992 to 1999.