He represented Germany at youth levels between 2001 and 2009, going on to win the 2009 UEFA European Under-21 Football Championship. He has played for the Iranian national team since 2011, helping them qualify for the 2014 World Cup, 2015 Asian Cup and the 2018 FIFA World Cup, although he did not play in the last. In 2015, Dejagah was voted by fans on Navad as Iran's best ever Left midfielder.