Raymond Alvah Hanson (December 10, 1923 – February 18, 2009) was an American engineer and inventor from Spokane, Washington. He held over 100 patents, and created and produced equipment that was used on the Trans-Alaskan pipeline, canals in over 50 countries (including the California Aqueduct System) and the self-leveling control for hillside Combine Harvesters.