Josephskapelle Düsseldorf, Baroque chapel in Altstadt, Düsseldorf, Germany.

Josephskapelle is a baroque chapel at the corner of Schlossufer and Altestadt in Düsseldorf's Altstadt, designed by Matteo Alberti with a Greek cross floor plan. It was built from 1712 to 1716 as a monastery chapel for the Carmelites. The interior holds a late-baroque organ by Samuel Green, built in 1795 for St Mary's Church in Chatham and reinstalled here in 2013; its mahogany case and 14 registers over two manuals without pedals are visible.

The chapel was built between 1712 and 1716 as a monastery chapel and later destroyed during World War II. Its reconstruction in the 1950s restored the original structure, and the interior was completed over the following decades.

The square in front of the chapel is named after Émilie Schneider, the Catholic nun and mystic buried inside; her grave is why the building is still visited. The chapel began as the convent chapel of Düsseldorf's Carmelites, whose prioress from 1726 to the late 1730s was Maria Anna Amalia Auguste of Pfalz-Sulzbach, a Wittelsbach princess.

The chapel sits in a central location within the Altstadt and is easy to reach on foot. Visitors should be aware this is an active place of worship, so quiet and respectful behavior is expected.

The organ, built by Samuel Green in 1795 for St Mary's Church in Chatham, England, was dismantled and stored after that church closed in 1974, then reinstalled here in 2013. Its mahogany case and 14 stops on two manuals, with no pedal, are unusual for a chapel of this size.