Frederick Huntington Gillett (October 16, 1851–July 31, 1935) was a prominent U.S. politician during the early 20th century. He sat in the United States House of Representatives from 1893 to 1925, and in the United States Senate from 1925 to 1931, as a Republican from Massachusetts. He served as Speaker of the United States House of Representatives from 1919 to 1925.