Joanna II (25 June 1373 – 2 February 1435) was Queen of Naples from 1414 to her death, upon which the senior Angevin line of Naples becomes extinct.

As a mere formality, she uses the title of Queen of Jerusalem, Sicily, and Hungary.

Joanna was born at Zadar, Dalmatia on 25 June 1373, as the daughter of Charles III of Naples and Margherita of Durazzo.

In 1414, she succeeds her brother Ladislaus to the throne of Naples; at this date she is 41 years old and is already the widow of her cousin Hedwig's rejected fiancé, William, Duke of Austria.

Her reign is marked by her quarrel with Pope Martin V and the power in the court of her numerous favorites and lovers, the first being Pandolfello Alopo.

Although Joanna marries twice, she does not have any children.