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William K. Frankena (1908–1994) was a University of Michigan philosopher known internationally for his work in moral philosophy and the history of ethics. Author of the influential textbook Ethics (1963), he also served as president of the American Philosophical Association.

Frederick Frelinghuysen (1753–1804) was a Revolutionary War officer, lawyer, and U.S. Senator from New Jersey. Rising to Major General, he later helped ratify the Constitution and founded a political dynasty that produced several prominent American statesmen.

Frederick Theodore Frelinghuysen (1817–1885) was a New Jersey lawyer, U.S. Senator, and U.S. Secretary of State under President Chester A. Arthur. A member of the prominent Frelinghuysen political dynasty, he also served as New Jersey Attorney General.

Joseph Sherman Frelinghuysen (1869–1948) was a New Jersey Republican politician and the last U.S. senator from the prominent Frelinghuysen political dynasty. He served in the U.S. Senate from 1917 to 1923 after earlier service in the New Jersey State Senate.

Theodore Frelinghuysen (1787–1862) was a New Jersey lawyer, U.S. senator, and educator who later served as president of Rutgers College. A prominent Whig leader, he opposed the Indian Removal Act and was the 1844 vice-presidential candidate with Henry Clay.

Peter Hood Ballantine Frelinghuysen Jr. (1916–2011) was a Republican congressman from New Jersey who served in the U.S. House of Representatives from 1953 to 1975. A member of the Frelinghuysen political dynasty, he also served in the Office of Naval Intelligence during World War II.

Rodney P. Frelinghuysen (born 1946) is a New Jersey Republican who served in the U.S. House of Representatives from 1995 to 2019. A member of the Frelinghuysen political dynasty, he previously served in the New Jersey General Assembly and as a Morris County freeholder.

John F. Frelinghuysen (1776–1833) was a New Jersey lawyer, militia officer in the War of 1812, and state legislator. The son of U.S. Senator Frederick Frelinghuysen, he also served in the New Jersey Legislative Council representing Somerset County.

Theodorus Jacobus Frelinghuysen (1691–1747) was a Dutch Reformed minister who arrived in New Jersey in 1720 and became a leading revivalist preacher in the Raritan Valley. He was the patriarch of the Frelinghuysen family political dynasty.