Frank Kent Foss (May 9, 1895 – April 5, 1989) was an American pole vaulter. He won a gold medal at the 1920 Summer Olympics, while breaking his own unofficial world record. Foss grew up in Oak Park, Illinois. After the Olympics, he worked in the meat packing industry, including spending time in Argentina. After returning to the United States, he lived in Hinsdale, Illinois. Foss graduated from Cornell University in 1917, where he was also a member of the Quill and Dagger society. He was the IC4A Champion in 1916 after tying for the first the year before. He was the AAU champion in 1919 and 1920.