She might not be everyone's cup of tea (to say the least), but it's difficult to deny the enormous impact that she had on British politics - which is why the first female Prime Minister has been named as the most influential woman of the last 70 years, beating feminist writer Germaine Greer and fictional character Bridget Jones to the title.
The BBC Radio 4 Woman's Hour award was judged by screenwriter Abi Morgan, former Woman's Hour editor Jill Burridge and business leader Baroness Karren Brady.
BBC radio journalist Emma Barnett said of Thatcher: "Anyone born in the 80s, and thereafter, grew up thinking it was normal for a woman to run the country. Anyone over the age of 18 while she was in charge was shaped by her leadership style and uncompromising policies."
"Helen Brook - Set up Brook Advisory Centres in 1964 offering contraceptive advice to unmarried women
Barbara Castle - Labour MP for Blackburn (1945-1979) and brought in the Equal Pay Act in 1970
Germaine Greer - Australian writer, recognised as one of the major voices of the feminist movement
Jayaben Desai - Prominent leader of the strikers in the Grunwick dispute in London in 1976
Bridget Jones - The protagonist of Bridget Jones's Diary, written by Helen Fielding
Beyonce - US singer and songwriter who emerged as part of Destiny's Child before a hit solo career"