Joanna of Hainaut

Joanna of Hainault
Born1315
Died1374
Noble familyHouse of Avesnes
Spouse(s)William V, Duke of Jülich
IssueGerhard VI of Jülich, Count of Berg and Ravensberg, William II, Duke of Jülich, others
FatherWilliam I, Count of Hainaut
MotherJoan of Valois

Joanna of Hainault (c. 1312–1374) was a Duchess of Jülich by marriage to William V, Duke of Jülich. She was the third daughter of William I, "The Good" Count of Hainaut, and Joan of Valois. She was a younger sister of Philippa of Hainault, Queen of England, and Margaret II, Countess of Hainault.