Johann Nicolaus Bach

10 October] 1669 – 4 November 1753) was a German composer of the Baroque period.

He was probably born at Eisenach, where his father was employed as a musician, attended the Eisenach Latin school until 1689, and was a student of the Jena city organist J.M.

Knüpfer, a son of Sebastian Knüpfer; after an Italian sojourn in 1696, he became organist at the Stadtkirche and the Kollegiatkirche in Jena.

He then returned to Jena where he lived for the rest of his life.

Surviving pieces include a mass, two chorale preludes on "Nun freut euch, lieben Christen g'mein" and a Singspiel Der jenaische Wein- und Bierrufer, this in the form of a quodlibet on Jena student traditions.