Frederick Huntington Gillett was an American politician who served as the 42nd Speaker of the United States House of Representatives from 1921 to 1925 and as a U.S. Senator from Massachusetts from 1925 to 1931. A Republican, Gillett first began his career in politics when he served in the Massachusetts House of Representatives from 1890 to 1891, and would go on to serve in the House from 1893 to 1925. At the time of his election, he was the oldest individual elected to a first term in the Senate, a record that he would hold until Peter Welch's victory in the 2022 United States Senate election in Vermont 98 years later.

The speaker of the United States House of Representatives, commonly known as the speaker of the House, is the presiding officer of the United States House of Representatives. The office was established in 1789 by Article I, Section II, of the U.S. Constitution. By custom and House rules, the speaker is the political and parliamentary leader of the House and is simultaneously its presiding officer, de facto leader of the body's majority party, and the institution's administrative head. Speakers also perform various other administrative and procedural functions. Given these several roles and responsibilities, the speaker usually does not personally preside over debates—that duty is instead delegated to members of the House from the majority party—nor regularly participate in floor debates.