Lee-Lou Demierre (born 21 June 2001)[1] is a Dutch breakdancer who performs under the name B-Boy Lee.

[2] His mother was a b-girl, which led to his interest in breakdancing.

[4] Lee won silver in the 2022 Red Bull BC One and the 2023 WDSF European Continental Championship, which sent him to the 2024 Summer Olympics,[2] where he came first in the Shanghai qualifiers.

[5] He made it to the final eight in the Olympics, but lost 3–0 to Phil Wizard.

He is part of the breakdancing crew Ruggeds.