Joost Theo Sylvio Yussef Abdelgalil Dowib (born April 14, 1992), known professionally as Josylvio, is a Dutch rapper.

Born in Naarden to a Dutch mother and an Egyptian father, Josylvio started his career in 2015 under the name Jaybay.

With success of the song, he released his debut album Ma3seb with Dutch hip hop producer Esko.

[4] In 2017 Josylvio was featured on the collaborative album All Eyez on Us along with Latifah, Kempi, Sevn Alias, Vic9 and Rocks.

[5] And in 2018, Josylvio took part in RTL reality program Expeditie Robinson in its 19th season finishing 18th.