1991 Stockholm Open

1991 Stockholm Open
Date21–28 October
Edition23rd
CategoryATP Championship Series
Draw48S / 24D
Prize money$840,000
SurfaceCarpet / indoor
LocationStockholm, Sweden
VenueStockholm Globe Arena
Champions
Singles
Boris Becker
Doubles
John Fitzgerald / Anders Järryd

The 1991 Stockholm Open was a men's tennis tournament played on indoor carpet courts. It was the 23rd edition of the Stockholm Open and was part of the ATP Championship Series of the 1991 ATP Tour. It took place at the Stockholm Globe Arena in Stockholm, Sweden, from 21 October through 28 October 1991. Second-seed Boris Becker won the singles title, his second consecutive win at the event and his third overall after winning in 1990 and 1988..

The singles draw was headlined by Stefan Edberg. Other top seeds were Boris Becker, Jim Courier and Michael Stich.