Katherine Marlea Clark is an American lawyer and politician who has served as House Minority Whip since 2023. She is currently in her seventh term as the U.S.
representative for Massachusetts's 5th congressional district, a post she has held since 2013. Prior to her current role, Clark served as Assistant Speaker from 2021 to 2023 and Vice Chair of the House Democratic Caucus from 2019 to 2021.