Wilhelm 'Willi' Hahnemann (14 April 1914 – 23 August 1991) was an Austrian and German football player who started his career at Admira Vienna.
[1][2] Hahnemann played 23 games from 1935 to 1948 for the Austria national football team and scored four goals in these appearances.
He also appeared with the German squad that took part in the 1938 World Cup in France.
[3] In a 1940 international match he managed the feat of a double hat-trick in a 13:0 victory over Finland.
[4] After his playing career, he became a manager with SpVgg Greuther Fürth[5] and in Switzerland.