| 1991 Volvo San Francisco | |
|---|---|
| Date | February 4–10 |
| Edition | 103rd |
| Category | World Series |
| Draw | 32S / 16D |
| Prize money | $225,000 |
| Surface | Carpet / indoor |
| Location | San Francisco, U.S. |
| Venue | San Francisco Civic Auditorium |
| Champions | |
| Singles | |
 Darren Cahill[1] | |
| Doubles | |
| Wally Masur / Jason Stoltenberg[2] | |
The 1991 Volvo San Francisco was a men's tennis tournament played on indoor carpet courts at the San Francisco Civic Auditorium in San Francisco, California in the United States and was part of the World Series of the 1991 ATP Tour. It was the 103rd edition of the tournament and was held from February 4 through February 10, 1991. Sixth-seeded Darren Cahill won the singles title and earned $33,800 first-prize money.[3]
- ^ "1991 San Francisco – Singles draw". Association of Tennis Professionals (ATP).
- ^ "1991 San Francisco – Doubles draw". Association of Tennis Professionals (ATP).
- ^ John Barrett, ed. (1992). The International Tennis Federation World of Tennis 1992. London: CollinsWillow. pp. 118, 134. ISBN 9780002184304.