Alessandro Piccolomini (bishop of Chiusi)

{{Infobox Christian leader

| type = Bishop

| honorific-prefix = Most Reverend

| name = Alessandro Piccolomini

| title = Bishop of Chiusi

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| church = Catholic Church

| archdiocese =

| diocese = Diocese of Chiusi

| see =

| term = 1657–1661

| predecessor = Carlo de' Vecchi

| successor = Marco Antonio Marescotti

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| death_date = 6 November 1661

| death_place = Chiusi, Italy

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Alessandro Piccolomini (died 6 November 1661) was a Roman Catholic prelate who served as Bishop of Chiusi (1657–1661).{{cite book|url=https://archive.org/stream/hierarchiacathol04eubeuoft#page/154|last1=Gauchat|first1=Patritius (Patrice)|title=Hierarchia catholica medii et recentioris aevi | volume=IV|pages=154–155|date=1935|publisher=Libraria Regensbergiana|location=Münster}} (in Latin)

On 12 March 1657, Alessandro Piccolomini was appointed during the papacy of Pope Alexander VII as Bishop of Chiusi.{{Cite web|last=Cheney |first=David M.|title=Bishop Alessandro Piccolomini |publisher=Catholic-Hierarchy.org|url=http://www.catholic-hierarchy.org/bishop/bpiccola.html |access-date=June 16, 2018}} Wikipedia:SPS

He served as Bishop of Chiusi until his death on 6 November 1661.