Koki Tanaka is a Japanese actor and singer, known for his work in the entertainment industry. He gained popularity as a member of the boy band KAT-TUN, which debuted in 2006. Tanaka has appeared in various television dramas and films, showcasing his versatility as a performer. In addition to his acting career, Tanaka has also pursued solo music projects. He has released several singles and albums, further establishing his presence in the J-Pop scene. His contributions to both music and acting have made him a well-recognized figure in Japan's entertainment landscape.