"Good Boy" is a song recorded by South Korean duo GD X Taeyang, members of the boy band Big Bang. It was released on November 21, 2014, as the second hip-hop project from YG Entertainment, the first being "Niliria" by G-Dragon featuring Missy Elliott a year prior. The single was written by G-Dragon, who also produced it along with the Fliptones and Freedo. "Good Boy" became a chart-topper on Billboard's World Digital Songs and a Top 5 hit on the Gaon Digital Chart. Additionally, a physical single was released and topped the Gaon Albums Chart.