Joan of Navarre, Queen of England (b. 1370)
Joan of Navarre, also known as Joanna (c. 1368 – 10 June 1437) was Duchess of Brittany by marriage to Duke John IV and later Queen of England by marriage to King Henry IV. She served as regent of Brittany from 1399 until 1403 during the minority of her son. She also served as regent of England during the absence of her stepson, Henry V, in 1415. Four years later he imprisoned her and confiscated her money and land. Joan was released in 1422, shortly before Henry V's death.

Joan was a daughter of King Charles II of Navarre and Joan of France.