This monograph is the first book in English devoted to legal aspects of the organisation and work of agricultural cooperatives in Poland. The author rightly points to the rich history of the agricultural cooperative movement in Poland, referring, among other things, to the activities of Stanisław Staszic at the beginning of the 19th century and the Act of 29th October 1920 on cooperatives. The concept, activity, types of agricultural cooperatives, legal principles of their establishment (founders, statutes, contributions and shares, bodies, registration) and functioning (assets, financial matters, contracting agreements, mergers, vetting) are presented. The deliberations focus primarily on agricultural production cooperatives, cooperative groups of agricultural producers, dairy cooperatives and farmers' cooperatives (the latter have been introduced by the Act of 4th October 2018) and have allowed the author to draw many interesting conclusions, including de lege ferenda.