On 1 August 2009, Kamionobe debuted for the Japan national team against France. She was a member Japan's squad for the 2011 and 2015 World Cups. Japan won the World Cup in 2011 and came second in 2015. In Asia, she was also a squad member at the 2010 Asian Games and the 2014 Asian Cup. Japan won the championship at both tournaments. She played 34 games and scored 2 goals for Japan until 2016.