1991 Superbike World Championship season Season Calendar Season Calendar

| Date_ | Round | Circuit | Race_1_Winner | Race_2_Winner | Report |
|---|---|---|---|---|---|
| 1 April | Great Britain | Donington | Doug Polen | Stéphane Mertens | Report |
| 28 April | Spain | Jarama | Doug Polen | Doug Polen | Report |
| 2 June | Canada | Mosport | Pascal Picotte | Tom Kipp | Report |
| 9 June | United States | Brainerd | Doug Polen | Doug Polen | Report |
| 30 June | Austria | Österreichring | Stéphane Mertens | Doug Polen | Report |
| 4 August | San Marino | Misano | Doug Polen | Doug Polen | Report |
| 11 August | Sweden | Anderstorp | Doug Polen | Doug Polen | Report |
| 25 August | Japan | Sugo | Doug Polen | Doug Polen | Report |
| 1 September | Malaysia | Shah Alam | Raymond Roche | Raymond Roche | Report |
| 15 September | Germany | Hockenheim | Doug Polen | Raymond Roche | Report |