Hans-Dieter "Timo" Zahnleiter (born 16 December 1948) is a German former professional football player and manager who played as a midfielder.
In the summer of 1974, he moved to Greece and transferred to AEK Athens along with fellow countryman Walter Wagner.
Zahnleiter played in the center and was distinguished mainly for his blocking skills, however, from the second year he was placed on the left end of the defense by František Fadrhonc, since the latter believed that this way AEK would achieve more beauty in their game.
Then he had a spell at Eintracht Frankfurt until 1989 and other German teams such as Viktoria Aschaffenburg, Energie Cottbus, VfB Marburg and Rot-Weiß Walldorf until 1994 and in 1995 he returned to Greece on behalf of PAS Giannina.
In January 1999, he was removed from Anagennisi Karditsa due to poor results and then returned to Germany, being the coach of SV Seckenheim at the Landesliga from 2005 to 2008 period.