2021 Supersport 300 World Championship

The 2021 Supersport 300 World Championship was the fifth season of the Supersport 300 World Championship of motorcycle racing.

The season was marred by the death of Dean Berta Viñales, who was killed in an accident at the first race of the Jerez round.

Entry list

 * All entries used Pirelli tyres.

Championship standings

 * Points