George Fillmore Swain (March 2, 1857 – July 1, 1931) was a civil engineer from the United States.

He was a professor at the Massachusetts Institute of Technology (MIT) and later at Harvard University.

He was graduated at the Massachusetts Institute of Technology in 1877 and then studied in Berlin, German Empire, for three years.

In 1887 he became professor of civil engineering at the Massachusetts Institute of Technology, which was then located in Boston.

He remained at MIT until 1909, when he became professor of civil engineering at the Harvard Graduate School of Applied Science.