:2001 Cincinnati Masters

{{Short description|Tennis tournament}}

{{Use mdy dates|date=January 2025}}

{{TennisEventInfo|2001|Cincinnati Masters|

| date=August 6–12

| edition=100th

| category=Tennis Masters Series

| prize_money=$2,450,000

| draw=64S / 32D

| surface=Hard / outdoor

| location=Mason, United States

| venue=Lindner Family Tennis Center

| champs={{flagicon|BRA}} Gustavo Kuerten{{cite web |title=2001 Cincinnati – Singles draw |url=https://www.atptour.com/en/scores/archive/cincinnati/422/2001/draws?matchtype=singles |publisher=Association of Tennis Professionals (ATP)}}

| champd={{flagicon|IND}} Mahesh Bhupathi / {{flagicon|IND}} Leander Paes{{cite web |title=2001 Cincinnati – Doubles draw |url=https://www.atptour.com/en/scores/archive/cincinnati/422/2001/draws?matchtype=singles |publisher=Association of Tennis Professionals (ATP)}}

| after_name=Western & Southern Financial Group Masters

}}

The 2001 Cincinnati Masters was a tennis tournament played on outdoor hard courts. It was the 100th edition of the Cincinnati Masters and was part of the Tennis Masters Series of the 2001 ATP Tour. It took place at the Lindner Family Tennis Center in Mason, Ohio in the United States from August 6 through August 12, 2001.

The tournament had previously appeared as part of Tier III of the WTA Tour but no event was held from 1989 to 2003.