Francesco Maria de' Medici (12 November 1660 – 3 February 1711) was a member of the House of Medici. He was successively a Governor of Siena, cardinal and later the heir of the Duchies of Rovere and Montefeltro by right of his mother.

Medici was born in Florence and was the second son of Ferdinando II de' Medici, Grand Duke of Tuscany and his wife Vittoria della Rovere. He was the product of a reconciliation between his parents after his mother found the Grand Duke of Tuscany in bed with one of his pages. He was the younger brother of the Cosimo de' Medici, Grand Prince of Tuscany. His maternal cousins included the Austrian bishop of Olmütz and the Duke of Mantua.

In 1683 he was appointed to governor of Siena, a position he maintained until his death. Three years later in September 1686 he was created cardinal with the permission of Pope Innocent XI. Francesco Maria exerted a notable influence in the conclaves of 1689 and 1700. Despite having this influence with the Papal States, he lived mainly at Villa di Lappeggi outside Florence. In his tenancy of the villa, Lappeggi was restored and became known as the seat of his personal court where various parties and much revelry took place.

At the death of his mother in March 1694, Medici succeeded to the Duchies of Rovere and Montefeltro, her allodial possessions, once the possession of the House of La Rovere. He acted as mentor to his nephew Grand Prince of Tuscany, heir to the Tuscan throne. When it became clear that the Grand Prince and his wife Violante Beatrice of Bavaria were not going to produce an heir, Cosimo III looked towards his brother to solve the problem facing the Tuscan succession. The question of an heir was further exacerbated when the union between Prince Gian Gastone and Anna Maria of Saxe-Lauenburg also remained barren.

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