Horstius
Horstius is the name of the following people:
- Dethard Horst (also: Horstius; 1548–1618), German legal scholar
- Gregor Horstius (1578–1636), German physician and anatomist
- Jacob Horst (also: Horstius; 1537–1600), German physician
- Johann Daniel Horstius (1616–1685), German medic and balneologist
