Jacob Daniel Auchincloss (born January 29, 1988) is an American politician, businessman, and Marine Corps officer serving as the U.S. representative for Massachusetts's 4th congressional district since 2021. A member of the Democratic Party, he previously served as a member of the Newton City Council from 2015 to 2021.
Born to a wealthy family in New England, Auchincloss graduated with a bachelor's degree from Harvard University in 2010. Commissioning into the U.S. Marine Corps that same year, he was deployed to Afghanistan in 2012 and to Panama in 2014. He currently serves in the Marine Corps Reserve with the rank of major.
Returning home from the military, Auchincloss ran for Newton city council in 2015. After his election victory, he earned his MBA from MIT and was re-elected in 2017 and 2019. In 2020, he was elected to the United States Congress at age 32, succeeding Joe Kennedy III. Re-elected unopposed in 2022 and 2024, Auchincloss voted with President Joe Biden 100% of the time.
