Yuju (유주) also known as Choi Yu-na (최유나) is a South Korean singer. She is the main vocalist of GFriend, which is under Source Music. She was born in Ilsan, South Korea and has one older sister. She trained at LOEN Entertainment. She attended the Seoul School of Performing Arts and graduated in February 2016 along with Eunha.
She made her solo debut on June 29, 2018 with the digital single "Love Rain".