Dr. Lynn S. Beedle (December 7, 1917 – October 30, 2003) was an American structural engineer, the founder and the director of the Council on Tall Buildings and Urban Habitat, notable also for his design and building of skyscrapers.  The New York Times called him "an expert on tall buildings". Beedle is also credited with making Lehigh University a center of research for civil and structural engineering because of his "groundbreaking studies on the properties of steel structures". Beedle was elected to the National Academy of Engineering in 1972 “for contributions to steel structures research and design practice, especially plastic design and residual stress effects.” The Council on Tall Buildings and Urban Habitat honored Beedle with creation of the Lynn S. Beedle Achievement Award.  Beedle was a recipient of a lifetime achievement award from the American Society of Civil Engineers. He also received Franklin Institute’s Frank P. Brown Medal, as well as the John Fritz Medal, the Berkeley Engineering Alumni Society Distinguished Engineering Alumnus Award, and was named Distinguished Professor of Civil Engineering by Lehigh University.
Beedle was born in Orland, California. He graduated from the University of California, Berkeley with a B.S. degree and joined US Navy. In 1952 received his doctorate from Lehigh University in structural engineering after 5 years of working there as an instructor and graduate studies.