Agnes Campbell Macphail (March 24, 1890 – February 13, 1954) was the first woman to be elected to the Canadian House of Commons, and one of the first two women elected to the Legislative Assembly of Ontario.

Active throughout her life in progressive Canadian politics, Macphail worked for two separate parties and promoted her ideas through column-writing, activist organizing, and legislation.

Hazel McCallion has won 12 consecutive municipal elections to remain the Mayor of Mississauga, Ontario, (Canada’s sixth largest city), for the past 36 years, outlasting a total of eight Canadian Prime Ministers.

That in itself is amazing. Even more so is the fact that Hazel just celebrates her 93rd birthday as I update this in 2014, and is still going strong.

Dr. Antonia Coello Novello, M.D., (born August 23, 1944) is a Puerto Rican physician and public health administrator.

She was a vice admiral in the Public Health Service Commissioned Corps and served as fourteenth Surgeon General of the United States from 1990 to 1993.

Margaret Hilda Thatcher, Baroness Thatcher, LG, OM, PC, FRS (October 13, 1925 - April 8, 2013) served as Prime Minister of the United Kingdom from 1979 to 1990 and Leader of the Conservative Party from 1975 to 1990.

"I've got a woman's ability to stick to a job and get on with it when everyone else walks off and leaves it."

She is the only woman to have held either post.