Naoki Urasawa (Japanese: 浦沢直樹, Hepburn: Urasawa Naoki, born January 2, 1960) is a Japanese manga artist and musician. He has been drawing manga since he was four years old, and for most of his professional career has created two series simultaneously. The stories to many of these were co-written in collaboration with his former editor, Takashi Nagasaki. Urasawa has been called one of the artists that changed the history of manga and has won numerous awards, including the Shogakukan Manga Award three times, the Tezuka Osamu Cultural Prize twice, and the Kodansha Manga Award once. South Korean filmmaker Bong Joon-ho called him "the greatest storyteller of our time", while Dominican-American writer Junot Díaz proclaimed Urasawa to be a national treasure in Japan. By December 2021, his various works had over 140 million copies in circulation worldwide, making him one of the best-selling authors of all time.

Urasawa's first major work was illustrating the action series Pineapple Army (1985–1988), which was written by Kazuya Kudo. The first serial that he wrote and illustrated himself, and his first major success, was the sports manga Yawara! (1986–1993). He then illustrated the adventure series Master Keaton (1988–1994), which was written by Hokusei Katsushika and Nagasaki, and created the sports manga Happy! (1993–1999). The thriller Monster (1994–2001) was his first to receive international acclaim and success, which continued with the science fiction mystery 20th Century Boys (1999–2006). Following the acclaimed Pluto (2003–2009), which is a re-imagining of Astro Boy by Osamu Tezuka, one of Urasawa's biggest influences, he and Nagasaki created the mystery series Billy Bat (2008–2016). After two short series, a sequel to Master Keaton with Nagasaki and Mujirushi: The Sign of Dreams, Urasawa began his currently ongoing Asadora! in 2018.