Jacqueline de Longwy
| Jacqueline de Longwy | |
|---|---|
| Duchess of Montpensier suo jure Countess of Bar-sur-Seine  | |
Portrait of Jacqueline de Longwy drawn by François Clouet in 1550  | |
| Born | c.1520 | 
| Died | 28 August 1561 Paris, France  | 
| Spouse | Louis de Bourbon | 
| Issue | Françoise, Duchess of Bouillon Anne, Duchess of Nevers François, Duke of Montpensier Charlotte, Princess of Orange  | 
| Father | Jean IV de Longwy | 
| Mother | Jeanne of Angoulême | 
Jacqueline de Longwy, Countess of Bar-sur-Seine (before 1520 – 28 August 1561), Duchess of Montpensier, Dauphine of Auvergne was a French noblewoman, and a half-niece of King Francis I of France. She was the first wife of Louis III de Bourbon, Duke of Montpensier, and the mother of his six children. She had the office of Première dame d'honneur to the queen dowager regent of France, Catherine de' Medici, from 1560 until 1561.