Greta Jančytė (born 24 April 1995) better known by her stage name GJan is a Lithuanian singer and songwriter.
She became known for her videos on YouTube. Her first hit single "Not Afraid" got more than 4 million views, followed by her second big hit "Tattoo" that received over 2 million views. In 2012, GJan was nominated for Best Music Video award at M.A.M.A. awards, but lost to Jurga Šeduikytė. In 2013, GJan was nominated for Best female act at M.A.M.A. awards.