As a leader of the USWNT at the 2019 FIFA Women's World Cup, Morgan scored five goals in the opening group game against Thailand to equal the World Cup single-game goals record set by Michelle Akers in 1991. Morgan also registered three assists in the game. The team's 13–0 scoreline set a new record for margin of victory in a World Cup match. On July 2, 2019, Morgan became the first woman to score a world cup goal on her birthday, in a 2−1 win over England to reach the 2019 FIFA Women's World Cup Final. In the final on July 7, Morgan helped win a penalty that was later converted by Megan Rapinoe to open the scoring, as the United States defeated the Netherlands 2–0. Morgan was awarded the tournament's Silver Boot; finishing as the joint-top scorer with six goals but losing out to Megan Rapinoe on a fewest minutes tiebreaker. She was named to the bench in the opening friendly of the Victory Tour against Ireland but was unused before being ruled out for the rest with a season-ending ankle injury.