The Agricultural Data Privacy Act of 2026 protects farmers' ownership and control of data collected from their farms, equipment, and operations. The bill prohibits companies from selling agricultural data—including information about crops, soil, livestock, weather, finances, and conservation practices—without a farmer's explicit written consent obtained through a clear, separate disclosure. Companies that collect or process this data must establish reasonable security measures to protect it from unauthorized access or disclosure, and all new contracts involving agricultural data must include a specific clause prohibiting sales without farmer consent. The Attorney General enforces the law through civil lawsuits, with penalties of up to $1,000 per violation, though companies have 45 days to fix violations related to security or contract requirements after receiving notice. The bill takes effect January 1, 2027, and is administered by the Secretary of Agriculture except for enforcement actions.