Any name could be a girls or a boys name, really.
I know someone who's name is Julian and he's a boy so I think it can be both.
it can be
If a boy : Ιουλιανός [IoulianOs] If a girl : Ιουλιανή [IoulianEE]
Her name is Danielle Haim. She is the percussionist for Julian's road band, The Sick Six.
Julian Krzewinski's birth name is Maszynski, Julian.
Julian Royce's birth name is Julian Gardener.
Julian Jeberaeel's birth name is Julian Jeberaeel.
Julian Doyle's birth name is Julian Doyle.
Julian Barratt's birth name is Julian Pettifer.
Julian Voloshin's birth name is Julian A. Voloshin.
Julian Cassin's birth name is Julian Paul Cassin.
Julian Lord's birth name is Julian Recardo Lord.
Julian Shackleton's birth name is Julian Howard Shackleton.