Louis Rayfield Purnell, Sr. (April 5, 1920 – August 10, 2001) was a noted curator at the United States' National Air and Space Museum and earlier in life, a decorated Tuskegee Airman. At the museum, he became expert in space flight artifacts, particularly spacesuits, and was instrumental in curating artifacts related to space exploration, during the pivotal years of the 1960s and into the 1980s. Purnell was the first African-American to become a curator at the Smithsonian Institution.