Shin Dong-woo (Hangul: 신동우; hanja: 申東佑; born June 16, 1991), better known by his stage name CNU (pronunciation: Shin-oo), is a South Korean singer and member of boy band B1A4, who made their debut in April 2011 under WM Entertainment. In 2012, he appeared in the KBS sitcom Sent From Heaven.
Shin Dong-woo was born on June 16, 1991, in Cheongju, North Chungcheong, South Korea. He studied at Bongmyung High School. In his adolescence he formed a rock band with his friend Jooyoung. He later studied at Hanyang University in the Department of Theater and Film.
On April 11, 2011, WM Entertainment revealed CNU as the final member in the lineup of their new boy group B1A4. The group released their debut single „OK“ and their mini album Let’s Fly on April 20, making their first broadcast performance on MBC’s Show! Music Core on April 23. Since then, CNU has participated in B1A4’s four studio albums and six EPs.