William Drejer

William Drejer (born 18 December 2005) is a motorcycle speedway rider from Denmark.

Career
Drejer reached the final of the 2022 Individual Speedway Junior European Championship.

He rides in the Danish Speedway League for Slangerup (2022 to 2024), in the Polish Ekstraliga for Tarnów (2022). and Vargarna in the Swedish Elitserien (2022).

In 2023, he was named in the Danish squad by team manager Nicki Pedersen. In 2024, he qualified for the final series of the 2024 SGP2 (the World U21 Championship).