Joachim Jerzy Marx (born 31 August 1944) is a Polish former professional footballer who played as a striker.

With Marx, Ruch won the national championship (1974 and 1975), and the Polish Cup (1974).

Later in his career, Marx went to France, where he played most notably for RC Lens (second place in Ligue 1 in 1977).

Since ending his professional career in 1982, Marx worked as a coach in France.

This biographical article related to a Polish association football forward is a stub.