Sylvain Richard (born February 17, 1979), better known by his stage name 20syl (pronounced "vaughn-seel", French: [vɛ̃sil]), is a French rapper, disc jockey, and producer. He is a composer and MC in the group Hocus Pocus, a member of the beatmaker collective of DJs C2C, one half of the Hip-Hop/electronic duo AllttA, and the quadruple world champion DMC Team. He published his first EP, Motifs, in 2014, followed by Motifs II in 2015.

During his career, he also produced for artists and groups such as Diam's, Disiz, Kohndo, Slum Village, Fabe, Scred Connexion, Nakk, and Sully Sefil and was involved in projects such as Just Us vol.1 or Original Bombattak.