Baltazar Adam Krčelić (5 February 1715 – 29 March 1778)[1] was a Croatian historian, theologian and lawyer.

In 1747, he was the canon of Zagreb and rector of the Collegium Croaticum Viennense in Vienna.

In 1755, at the prompting of the court in Vienna, he composed a draft for the administrative reform in Croatia.

His first published work is the biography of medieval Bishop of Zagreb Augustin Kažotić, which was written in Kajkavian.

In 1754, he completed a major work of eclessial history of Zagreb, publishing it in 1770, which was later used by Daniele Farlati.