| Champ: |  Ken Flach Robert Seguso |
| Runner: |  Grant Connell Glenn Michibata |
| Score: | 6–7(3–7), 6–4 7–5 |
| Draw: | 28 (1/2) |
| Seeds: | 8 |
| Type: | singles doubles |
| Main Name: | Cincinnati Masters |
See main article: 1991 Thriftway ATP Championships.
Andre Agassi and Petr Korda were the defending champions, but Agassi chose not to participate. Korda played along Ivan Lendl, but lost in the first round to Neil Borwick and Simon Youl.
Ken Flach and Robert Seguso won the title defeating Grant Connell and Glenn Michibata in the finals, 6–7(3–7), 6–4 7–5.[1] [2]
The top four seeded teams received byes into the second round.