Francesco Piccolomini (died 1622) was a Roman Catholic prelate who served as Bishop of Grosseto (1611–1622).

On 17 August 1611, Francesco Piccolomini was appointed during the papacy of Pope Paul V as Bishop of Grosseto.^[1] On 6 November 1611, he was consecrated bishop by Giovanni Garzia Mellini, Cardinal-Priest of Santi Quattro Coronati, with Alessandro Borghi (bishop), Bishop Emeritus of Sansepolcro, and Antonio Maria Franceschini, Bishop of Amelia, serving as co-consecrators.^[1] He served as Bishop of Grosseto until his death in May 1622.^[1] While bishop, he was the principal co-consecrator of Gregorio Pomodoro, Bishop of Larino (1616) .^[1]

• Cheney, David M. "Diocese of Grosseto". Catholic-Hierarchy.org. Retrieved January 4, 2019. (for Chronology of Bishops) ^{[self-published]}
• Chow, Gabriel. "Diocese of Grosseto (Italy)". GCatholic.org. Retrieved January 4, 2019. (for Chronology of Bishops) ^{[self-published]}

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