Nelson Irrigation Corporation is a prominent American manufacturer of agricultural irrigation products, focused on enhancing water application efficiency. Established in 1972 and rooted in the Nelson family's manufacturing history since 1911, the company is based in Walla Walla, Washington. It designs, develops, and produces a range of advanced irrigation solutions, including Rotator® and Big Gun® Sprinklers, control valves, pressure regulators, and pivot irrigation components.

The company serves a diverse global customer base, supporting agricultural operations in over 100 countries through a network of dealers and distributors. Nelson Irrigation collaborates closely with farmers and agricultural businesses to create reliable and efficient irrigation technologies that optimize water use and improve crop production. With a commitment to innovation, quality, and sustainability, the company aims to help growers save water and energy while promoting responsible land stewardship. Nelson Irrigation employs around 200 people and generates annual revenues of approximately $40 million.