Döngü Cooperative is a research and development cooperative in İzmir, Türkiye, focused on supporting and strengthening agricultural production. It develops solutions and models that help rural communities continue farming, contribute to local development, and strengthen the position of women in rural areas. The cooperative brings together the expertise of its members and promotes collaboration among producers, consumers, universities, industry, and public institutions, with an emphasis on transparency, accountability, and fair income sharing.

Its work combines sustainability, agricultural biodiversity, technology, and traditional knowledge to create value-added products and new markets for agricultural outputs. Flax is a central focus, with initiatives spanning local seed and cultivation projects, research into textile applications, and the documentary The Cycle of Flax. Through its online store, Döngü offers food, textile, and skin and hair care products, as well as designs and items associated with Kahrat. Its activities also include educational programs, workshops, community initiatives, and projects involving agricultural equipment and product development. The cooperative invites partners and supporters to contribute to its work.