This article proposes an in-depth investigation into the significant contribution of the "Guardians of Liberty" - notable women such as Ayn Rand, Isabel Paterson and Rose Wilder Lane - in the history of liberalism. The approach will be enriched by the Austrian School of Economics perspective, exploring how their ideas have shaped economic and political thought, promoting the principles of individualism, liberalism and freedom. The aim is to highlight the fundamental role of these women in defending anti-totalitarian ideas and how their contributions have influenced the evolution of economic thought over time up to the present day.