Johannes Hubertus Petrus Josephus (Jean) den Rooijen (2 January 1866 – 12 February 1939) was a Dutch glazier.
[1] Den Rooijen and his younger brother Piet (1867–1913) learned the trade as glass painters at the Roermond atelier F. Nicolas en Zonen [nl].
In 1895 Den Rooijen, assisted by his brother, started his own studio.
Piet had to stop working in 1908 due to illness and died a few years later.
The studio was continued by his widow, until she sold it to JHM Wielders in 1951.