Frederick Cecil Mills (March 24, 1892 – February 9, 1964) was an American economist. He was a Professor of Economics at Columbia University in Manhattan from 1919 to 1959. An expert on business cycles, he was also a researcher at the National Bureau of Economic Research from 1925 to 1953. In 1940, he served as President of the American Economic Association. Mills was named a Fellow of the American Statistical Association in 1926. His son, Robert Mills, was a physicist known for the development of Yang–Mills theory.