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Hansen took part in the first official Danish national team game, played at the 1908 Summer Olympics. He played all Denmark's three matches at the tournament, as the team won silver medals. Four years later, Hansen played all three Danish matches at the 1912 Olympics. In the semi-finals against the Netherlands, Hansen scored an own goal, as Denmark won 4–1. Like in 1908, Denmark met Great Britain in the final, and once more they won silver medals. Hansen ended his national team career after the 1912 Olympics, having played seven national team games.