On 1 August 2009, Kamionobe debuted for the Japan national team against France.[1] She was a member of Japan's squad for the 2011 and 2015 World Cups.[2] Japan won the World Cup in 2011[3] and came second in 2015. 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.