Johann Heinrich Pabst (25 January 1785 – 28 July 1838) was a German-Austrian physician, philosopher and lay theologian who was a native of Lindau in Eichsfeld.
In 1807 he earned his medical doctorate at the University of Göttingen and afterwards relocated to Vienna.
Subsequently, he served as a military physician for an Austrian battalion during the Napoleonic Wars.
In 1810 he resigned from his position at a hospital in Eger on account of severe illness.
In the 1820s Pabst formed a close friendship with Austrian philosopher Anton Günther (1783–1863), and the two men collaborated on the treatise "Janusköpfe für Philosophie und Theologie" (Heads of Janus for philosophy and theology).