Johan Christian Drewsen (23 December 1777 – 25 August 1851) was a Danish paper manufacturer, agronomist and politician.

Prominent cultural figures such as Knud Lyne Rahbek and Adam Oehlenschläger were frequent visitors to the home.

Drewsen was apprenticed to his father but was struck by the new ideas of the time and the revolution and planned to become an army officer and go into French military service.

When Drewsen was married in 1898, his father gave him the agricultural estate Smidstrup some ten kilometres north of Strandmøllen.

He became a member of the Royal Danish Agricultural Society ('Det Kongelige Danske Landhusholdningsselskab') in 1812 where he became the editor and writer of several publications on farming.

Together with Jonas Collin, he was the founder of the Agricultural Society for Copenhagen County ('Agerdyrkningsselskabet for Københavns Amt') in 1818 (closed 1824).

It developed into the largest paper mill in the country after he modernized it with the introduction of steam engines and a hydraulic press.