In September 2012, Matsubara was selected the Japan U-17 national team for 2012 U-17 World Cup. She played at 2 matches. In February 2019, Matsubara was selected the Japan national team for SheBelieves Cup. At this tournament, on February 27, she debuted as defensive midfielder against United States. She played 4 matches and scored one goal for Japan in 2019.