Aim. In Poland during the Second Republic, women played an important role in shaping the social and economic foundations of the reborn state. One of the key manifestations of their involvement was the creation of women’s organizations, including the Women’s Social Self-Help Association. The organization not only supported the activation of women, but also contributed to the development of the idea of cooperatives in Poland, playing an important role in the process of building a civil society. The purpose of this article is to analyze the activities of the Women’s Social Self-Help Association in the context of the development of cooperatives and their impact on strengthening the socio-economic position of women in the Second Republic. Methods and materials. The analysis is based on available archival materials, including reports of the Association, legal documents, and the women’s press of the time, and the social press. Historical methods, including source criticism and comparative analysis, were used to provide a comprehensive picture of the organization’s activities. Results and conclusion. The research indicates that the Women’s Social Self-Help Association played a key role in promoting the idea of cooperatives as an effective tool for combating poverty and social exclusion. At the same time, the organization contributed to increasing social awareness of the role of women in public and economic life. The results emphasize the importance of women’s organizations in shaping a modern society based on solidarity and cooperation.