Joachim Tielke was a German maker of musical instruments. He was born in Königsberg, Duchy of Prussia a fief of Kingdom of Poland, and died in Hamburg.
A publication was dedicated to him by Günther Hellwig. Hellwig lists the total number of 139 instruments still existing of Tielke's oeuvre, with lutes, angelicas, theorboes, bell citterns, guitars, pochettes, violins, viole d'amore without sympathetic strings, barytons, viole da gamba, and bows. The publications of 2011 and 2020 omit few instruments and the bows as unauthentic, but new findings raise the total number of instruments and fragments from the Tielke workshop to 174.
More recent research shows that all theorboes were originally either lutes with bent-back pegboxes or are modifications of angelicas. The bows have shown to be non-authentic. On the other hand, nearly thirty instruments not known to Hellwig have come up, among them the fragment of a baryton, a cello, more viols, guitars, lutes. Tielke's existing oeuvre is therefore one of the most comprehensive and by number close to that of Stradivari and the other great Italian makers.