Lina Magull has been chosen to represent junior teams by the German Football Association since 2008. In 2010 and 2011, she played in the UEFA Women's Under-17 Championship and finished in the third place respectively. She participated in the German squad competing in the 2012 FIFA U-20 Women's World Cup in Japan. In the second group game against Ghana, Magull scored the only winning goal in injury time of the second half to help Germany secure their place in the quarter-final. Germany eventually reached the final but lost 0–1 to the United States. In 2013, she played in the 2013 UEFA Women's Under-19 Championship in Wales and reached the semi-finals, where her Germany were defeated 1–2 by France. In her second FIFA U-20 Women's World Cup in Canada, Germany, under Magull's captaincy, became the champions after a 1–0 victory after extra time against Nigeria.