Eunha (은하) also known as Jung Eun-bi (정은비) is a South Korean singer. She is the lead vocalist of GFriend, which is under Source Music. She was born in Seoul, South Korea and has one older brother and one older sister.

She was a Krazy Dance Academy & DM Skool trainee along with SinB before going to Def Dance Skool. She was accepted at LOEN Entertainment on 2011 and trained for almost a year then left to focus on her studies. She was then invited by Source Music's team leader Lee Ri-won in 2014 in the said agency and was included in the final lineup of GFriend.[1] She was transferred to Seoul School of Performing Arts and graduated in February 2016 along with Yuju.