Maximilian von Castrop was a noble who rebelled against the Galactic Empire in 796 UC (487 IC / 3596 CE).
Castrop may also refer to:
- Castrop (planet), the planet which the Castrop family were lords of
- Castrop (star), a star which anchors the Castrop Starzone
- Castrop Starzone, the starzone in which the planet Castrop is located
- Eugen von Castrop, Maximilian's father and former Imperial treasury secretary