The 1991 Fuji 1000 km was the second round of the 1991 All Japan Sports Prototype Car Endurance Championship season. It took place at Fuji Speedway, Japan on May 5, 1991.
Results are as follows:[1]
| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
|---|---|---|---|---|---|---|---|
| 1 | C1 | 23 | Nissan Motorsport |  Kazuyoshi Hoshino Toshio Suzuki | Nissan R91CP | 224 | |
| 2 | C1 | 1 | Nissan Motorsport | Masahiro Hasemi Anders Olofsson | Nissan R91CP | 224 | |
| 3 | C1 | 36 | TOM'S | Hitoshi Ogawa Masanori Sekiya Andy Wallace | 223 | ||
| 4 | C1 | 100 | Trust Racing | George Fouche Steven Andskar | 223 | ||
| 5 | C1 | 37 | Toyota Team TOM'S | Geoff Lees Eje Elgh Pierre-Henri Raphanel | 222 | ||
| 6 | GTP | 202 | Mazdaspeed | Takashi Yorino Yojiro Terada | Mazda 787B | 222 | |
| 7 | C1 | 7 | The Alpha Racing | Tiff Needell Bob Wollek | 218 | ||
| 8 | C1 | 38 |  Roland Ratzenberger Naoki Nagasaka | Toyota 91C-V | 216 | ||
| 9 | GTP | 201 | Mazdaspeed | Tetsuya Ota David Kennedy | Mazda 787B | 191 | |
| 10 | GTP | 230 | Pleasure Racing | Tetsuji Shiratori Masatomo Shimizu Shuji Fujii | Mazda 767 | 179 | |
| DNF | C1 | 2 | Team Taisan | Will Hoy Stanley Dickens Kunimitsu Takahashi | 151 | ||
| DNF | C1 | 77 | Team Fedco | Kiyoshi Misaki Hisashi Yokoshima | 137 | ||
| DNF | C1 | 27 | From A Racing |  Volker Weidler Akihiko Nakaya Thomas Danielsson | Nissan R91CK | 103 | |
| DNF | C1 | 18 | TWR Suntech |  Mauro Martini Jeff Krosnoff | Jaguar XJR-11 | 83 | |
| DNF | C1 | 25 | Team LeMans | Hideki Okada Takao Wada | Nissan R90CP | 81 | |