Johann Matthäus Hassencamp (28 July 1743 – 6 October 1797) was a German Orientalist and Protestant theologian born in Marburg. He studied philology, mathematics, theology and philosophy at the Universities of Marburg and Göttingen. Afterwards, he continued his studies in France, Holland and England, followed by a return to Marburg, where in 1768 he received his habilitation. Later, he became a professor of Oriental languages and mathematics at the University in Rinteln, where in 1777 he was given additional responsibilities as head of the university library.