Jung Joon-young was born on February 21, 1989, in Jakarta. He grew up in Indonesia, China, Japan, France and Philippines. He is the youngest son of Jung Hak-chun and Choi Jong-sook. His father was an international businessman who travelled to many countries for his Business. Jung learned to speak five different languages such as English, Mandarin, Korean, conversational Japanese, and Tagalog. He couldn't enroll in a regular school due to frequent moves. He took private lessons for regular subjects such as Math, English, violin, and piano. He also got his fourth-degree black belt in Taekwondo.