:1991 Paris Open

{{TennisEventInfo|1991|Paris Open|

| date=28 October – 4 November

| edition=19th

| category=ATP Championship Series, Single-Week

| prize_money=$1,650,000

| draw=48S / 24D

| surface=Carpet / indoor

| location=Paris, France

| venue=Palais omnisports de Paris-Bercy

| champs= {{flagicon|FRA}} Guy Forget{{cite web|title=1991 Paris – Singles draw|url=https://www.atptour.com/en/scores/archive/paris/352/1991/draws?matchtype=singles|publisher=Association of Tennis Professionals (ATP)}}

| champd= {{flagicon|USA}} John Fitzgerald / {{flagicon|SWE}} Anders Järryd{{cite web|title=1991 Paris – Doubles draw|url=https://www.atptour.com/en/scores/archive/paris/352/1991/draws?matchtype=doubles|publisher=Association of Tennis Professionals (ATP)}}

| main_name = Paris Masters

}}

The 1991 Paris Open was a men's tennis tournament played on indoor carpet courts. It was the 19th edition of the Paris Masters, and was part of the ATP Super 9 of the 1991 ATP Tour. It took place at the Palais omnisports de Paris-Bercy in Paris, France, from 28 October through 4 November 1991.

The singles draw was headlined by ATP No. 1, Tokyo, Queen's, US Open titleist, Australian Open, Wimbledon semi-finalist Stefan Edberg, Australian Open, Stockholm winner, Wimbledon, Monte Carlo, Indianapolis runner-up Boris Becker and Indian Wells, Miami and French Open champion Jim Courier. Other top seeds were Cincinnati winner Guy Forget, Pete Sampras, Sergi Bruguera and Karel Nováček.{{cite book|title=The International Tennis Federation World of Tennis 1992|year=1992|publisher=CollinsWillow|location=London|isbn=9780002184304|pages=119, 133|editor=John Barrett}}