Jennifer Brigid O'Malley Dillon (born September 28, 1976) is an American political strategist and campaign manager serving as the White House deputy chief of staff under President Joe Biden. She was the manager of Biden's 2020 presidential campaign. O'Malley Dillon previously served as the manager of Beto O'Rourke's 2020 presidential campaign. She is the first female presidential campaign manager for a winning Democratic ticket.