Horst "Schimmi" Szymaniak (29 August 1934 – 9 October 2009) was a German footballer who played as a midfielder.

The clubs he played for include: SpVgg Erkenschwick, Wuppertaler SV, Karlsruher SC, Calcio Catania, F.C.

Szymaniak was a defensive midfielder who usually played as a left half back and less frequently as an inside forward.

He was renowned as one of the best players in German football during the late 1950s and early 1960s, with Kicker rating him world class five times between 1957 and 1961 in their biennial Rangliste des deutschen Fußballs (ranking list of German football).

Szymaniak died after a long illness on 9 October 2009 in a nursing home in Melle near Osnabrück.