1991 Geneva Open
{{TennisEventInfo|1991|Geneva Open|
| date=9–16 September
| edition=12th
| category=World Series
| prize_money=$225,000
| draw=32S / 16D
| surface=Clay / outdoor
| location=Geneva, Switzerland
| champs={{flagicon|AUT}} Thomas Muster{{cite web |title=1991 Geneva – Singles draw |url=https://www.atptour.com/en/scores/archive/geneva/322/1991/draws?matchtype=singles |publisher=Association of Tennis Professionals (ATP)}}
| champd={{flagicon|ESP}} Sergi Bruguera / {{flagicon|SUI}} Marc Rosset{{cite web |title=1991 Geneva – Doubles draw |url=https://www.atptour.com/en/scores/archive/geneva/322/1991/draws?matchtype=doubles |publisher=Association of Tennis Professionals (ATP)}}
| after_year=2015
}}
The 1991 Geneva Open was a men's tennis tournament played on clay courts that was part of the World Series of the 1991 ATP Tour. It was the 12th edition of the tournament and was played at Geneva, Switzerland from 9 September through 16 September 1991. Unseeded Thomas Muster won the singles title.{{cite book|title=The International Tennis Federation World of Tennis 1992|year=1992|publisher=CollinsWillow|location=London|isbn=9780002184304|page=118, 139|editor=John Barrett}}
Finals
=Singles=
{{main|1991 Geneva Open – Singles}}
{{flagicon|AUT}} Thomas Muster defeated {{flagicon|AUT}} Horst Skoff 6–2, 6–4
- It was Muster's 2nd title of the year and the 11th of his career.
=Doubles=
{{main|1991 Geneva Open – Doubles}}
{{flagicon|ESP}} Sergi Bruguera / {{flagicon|SUI}} Marc Rosset defeated {{flagicon|SWE}} Per Henricsson / {{flagicon|SWE}} Ola Jonsson 3–6, 6–3, 6–2
- It was Bruguera's 3rd title of the year and the 5th of his career. It was Rosset's only title of the year and the 3rd of his career.
References
{{reflist}}