Zacharias Hildebrandt (1688, Münsterberg, Silesia – 11 October 1757, Dresden, Saxony) was a German organ builder.
In 1721, Hildebrandt finished his masterpiece, the organ of the Nikolaikirche of Langhennersdorf, a small village near Freiberg.
The dispute was settled by an agreement in which Hildebrandt obliged himself to take over only orders rejected by Silbermann.
Hildebrandt's largest organ has 3 manuals and a pedalboard with 53 stops, and is located in the church of St. Wenzel in Naumburg an der Saale.
The organ which had been rebuilt several times since then has been completely restored from 1993 to 2000 by Eule Orgelbau, and is commonly deemed Hildebrandt's magnum opus.