Ansgar Knauff (born 10 January 2002) is a German footballer who plays as a right winger for Bundesliga club Eintracht Frankfurt.

In September 2020, he made his debut for Borussia Dortmund II in the fourth division of German football.

[7] He made his first team debut on 8 December, coming on as a substitute in the 83rd minute for Thorgan Hazard in the 2020–21 UEFA Champions League match against Zenit Saint Petersburg.

[9] On 20 March 2021, he made his first appearance in the Bundesliga, coming on for Thomas Meunier in the 80th minute and providing the assist for a late equalizer in a 2-2 draw against Köln.

[14] In the knockout phase of the Europa League campaign, he was an undisputed starter, did not miss a single minute of playing time, and scored important goals against FC Barcelona in the quarter-final and West Ham in the semifinal.