Mark Kratzmann and Wally Masur were the defending champions, but competed this year with different partners. Kratzmann teamed up with Pat Cash and lost in the first round to Ivan Lendl and Shuzo Matsuoka, while Masur teamed up with Jason Stoltenberg and lost in the first round to Scott Melville and Jan Siemerink.
Stefan Edberg and Todd Woodbridge won the title, defeating John Fitzgerald and Anders Järryd in the final, 6–4, 5–7, 6–4.
Seeds The top four seeds received a bye into the second round.
Draw
Finals
Top half
Bottom half
References
External links 1991 Japan Open men's doubles draw