Johann Friedrich Hennert
Born	(1733-10-19)19 October 1733 Berlin, Prussia
Died	30 March 1813(1813-03-30) (aged 79) Utrecht
Nationality	German
Scientific career
Fields	Mathematics Physics
Institutions	University of Utrecht
Doctoral advisor	Leonhard Euler Joseph-Nicolas Delisle

Johann Friedrich Hennert (19 October 1733 – 30 March 1813) was German-born and lectured in mathematics and physics at the University of Utrecht. He was a significant student of Leonhard Euler. He was known for his inclination towards the British school of philosophy.

Work

Hennert held the chair of mathematics at the University of Utrecht until 1805.

Hennert was an important figure in the history of Dutch mathematics. He wrote a number of textbooks on differential calculus.

Jan van Swinden was one of his most important students.