Marie de' Medici (French: Marie de Médicis; Italian: Maria de' Medici; 26 April 1575 – 3 July 1642) was Queen of France and Navarre as the second wife of King Henry IV. Marie served as regent of France between 1610 and 1617 during the minority of her son Louis XIII. Her mandate as regent legally expired in 1614, when her son reached the age of majority, but she refused to resign and continued as regent until she was removed by a coup in 1617.
Marie was a member of the powerful House of Medici in the branch of the grand dukes of Tuscany. Her family's wealth inspired Henry IV to choose Marie as his second wife after his divorce from his previous wife, Margaret of Valois.