Klingenberg has played for the United States women's national soccer team at the U-16, U-17, U-20 and U-23 levels. She received her first call-up to the senior squad for the 2011 Four Nations Tournament and earned her first two caps during the event. She was named an alternate for the 2012 Summer Olympics. In March 2013, she was named to the senior team roster by US WNT coach, Tom Sermanni for upcoming exhibition matches against Germany and the Netherlands. Klingenberg made her debut for senior team on January 23, 2011 at the Four Nations Tournament against Canada, coming in as a substitute at seventy-eighth minute. She also played in the 2015 FIFA Women's World Cup. The United States Women's National Soccer Team won the tournament on July 5, 2015. Klingenberg started in every match of the tournament for the team. Despite seeing extensive playing time during the 2016 Summer Olympics, Klingenberg would receive sparse minutes throughout 2017 and has not been called up since January 2018.