Because his dad's last name is Bieber and Justin's sister is called Jazmine and his brother is Jaxon and his dad's name is Jeremy. They all begin with J and so Justin is Called Justin!
His dad Jeremy's last name is Bieber, and his mom decided to name him Justin.
Because his parents named him that when he was born.
No Joel Bieber is not Justin Biebers dad. Justin Biebers dads name is Jeremy Bieber not Joel.
Justin biebers last name is actually bieber his full name is Justin drew bieber
BIEBER
No, his name is Justin Drew Bieber, no Alex included :) .
Justin drew bieber
Justin drew bieber.
Justin Drew Bieber
i hate Justin bieber
Justin Bieber's middle name is Drew :)
The D of Justin Bieber means Drew. His whole name is Justin Drew Bieber.
Justin Bieber's twitter name is justinbieber.
Shawn bieber