Johannes Brassicanus can refer to:
- Johannes Brassicanus (humanist) (1475-1514), German humanist and scholar
- Johann Alexander Brassicanus (c. 1500-1539), Austrian jurist
- Johann Ludwig Brassicanus (1509-1549), Austrian jurist
- Johannes Brassicanus (composer) (c. 1570-1634), Austrian composer and poet