The dean of the United States House of Representatives is the longest continuously serving member of the House. The current dean is Hal Rogers, a Republican from Kentucky, who has served in the House since 1981. The dean is a symbolic post whose only customary duty is to swear in a speaker of the House after they are elected. This responsibility was first recorded in 1819 but has not been observed continuously – at times, the speaker-elect was the current dean or the speaker-elect preferred to be sworn in by a member of their own party when the dean belonged to another party. The dean comes forward on the House Floor to administer the oath to the speaker-elect, before the new speaker then administers the oath to the other members.

Harold Dallas Rogers is an American lawyer and politician serving his 22nd term as the U.S. representative for Kentucky's 5th congressional district, having served since 1981. He is a member of the Republican Party. Upon Don Young's death in 2022, Rogers became the dean of the House of Representatives.