Ernst Poertgen (25 January 1912 – 30 November 1986) was a German footballer who played for Schwarz-Weiß Essen, 1.
FC Nürnberg, Schalke 04, Bonner SC and Wacker München.
He also represented the German national team, earning three caps between 1935 and 1937 and scoring five goals, including a hat trick in a 7–2 win against Luxembourg in September 1936.