"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.

Kwon Ji-yong, best known as G-Dragon (지드래곤), is a South Korean rapper, singer, songwriter, and entrepreneur, known as the "King of K-pop". Born and raised in Seoul, South Korea, G-Dragon made his debut in 2006 and rose to prominence as the leader of the South Korean boy band BigBang, which went on to become one of the best-selling boy bands in the world.