Joseph Karl Gruber (4 May 1912 – 29 September 1967)[1][2] was an Austrian football player and manager.

A midfielder, he played for Austria Wien, French club Le Havre, Maltese side Floriana and in Germany for Alemannia Aachen and Hamburger SV.

He managed Dutch side Ajax between 1962 and 1963[3] and also coached Alemannia Aachen,[4] DOS,[5][6] Vitesse Arnhem[7] Pittsburgh Phantoms.

[9] He was married to Agnes Margarete Savelsberg.

This biographical article relating to Austrian association football is a stub.