Karl Harmer (1888 – September 1966) was an Austrian football manager and former player.
He played with SK Rapid Wien on two occasions, first in 1907–08 and then on 1915–16, having won the Austrian Championship in 1915–16.
[1] He also played with FK Slavija Sarajevo, then part of Austro-Hungary as Condominium of Bosnia and Herzegovina.
[1] In 1917–18 he played back in Austrian championship with Germania Schwechat.
[2][3] Karl Harmer made one appearance for the Austria national football team, on November 3, 1907, in a game against Hungary.