| 2011 Supersport World Championship | |||
| Previous: | 2010 | Next: | 2012 |
| Support series: Superbike World Championship FIM Superstock 1000 Cup European Superstock 600 Championship European Junior Cup | |||
The 2011 Supersport World Championship was the thirteenth FIM Supersport World Championship season—the fifteenth taking into account the two held under the name of Supersport World Series. The season began on 27 February at Phillip Island and ended on 16 October at Portimão after twelve rounds.
With reigning champion Kenan Sofuoğlu moving to Moto2, Eugene Laverty and Joan Lascorz moving up to the Superbike World Championship, Chaz Davies emerged as the season winner, despite his bad start in the first round.