Joanna of Bourbon (3 February 1338 – 6 February 1378)  was Queen of France by marriage to King Charles V. She acted as his political adviser and was appointed potential regent in case of a minor regency.
On 8 April 1350, she married her cousin, the future Charles V of France, at Tain-l'Hermitage. Born thirteen days apart, they both were 12 years old. When Charles ascended the throne in 1364, Joanna became queen of France.
Queen Joanna and Charles V had somewhat of a strained relationship during his tenure as dauphin because of his infidelity with Biette de Casinel, but their relationship improved when after he became King, and reportedly, he sometime confided in her in political and cultural issues and relied on her advice. According to tradition, Joanna was rumored to have taken the poet Hippolyte de Saint-Alphon for a lover, who was the biological father of her child John, who was born and died in 1366.
Queen Joanna was described as mentally fragile, and after the birth of her son Louis in 1372, she suffered a complete mental breakdown. This deeply worried Charles V, who made a pilgrimage and offered many prayers for her recovery. When she did recover and regained her normal state of mind in 1373, Charles V appointed her legal guardian and regent of France should he die when his son and heir was still a minor.
Joanna died at the royal residence Hôtel Saint-Pol in Paris, on 6 February 1378 (1377 Old Style),  three days after her 40th birthday, and two days after the birth of her youngest child, Catherine. Froissart recorded that Joanna took a bath against her physicians' advice. Soon after, she went into labour and died two days after giving birth. The king was devastated. Her heart was buried in the Cordeliers Convent and her entrails in the Couvent des Célestins. The Couvent des Célestins in Paris was the most important royal necropolis after the Basilica of St Denis. The rest of her remains were then placed at Saint-Denis.
Joanna and Charles had nine children. Two of them reached adulthood:
|Ancestors of Joanna of Bourbon|
Joanna I of Auvergne
|Queen consort of France
Isabeau of Bavaria