Frederick VI of Hohenstaufen (Modigliana, February 1167 – Acre, 20 January 1191) was duke of Swabia from 1170 to his death at the siege of Acre. He was the third son of Frederick I Barbarossa and Beatrice I, Countess of Burgundy and brother of Henry VI, Holy Roman Emperor. Frederick was betrothed with the princess Constance of Hungary, but they never married.
| Preceded by Frederick V |
Duke of Swabia 1170–1191 |
Succeeded by Conrad II |