SMAP

was a Japanese boy band, composed of Masahiro Nakai, Takuya Kimura, Goro Inagaki, Tsuyoshi Kusanagi, and Shingo Katori. The group was created in 1988 by music producer Johnny Kitagawa, founder of Johnny & Associates, originally as a six-piece with Katsuyuki Mori, until his departure from the band in 1996. The name stands for "Sports Music Assemble People". After making their debut in 1991, the group took the Japanese entertainment industry by storm, becoming one of the most successful boy bands in Asia. The group is often referred to as a "national treasure" and a "fortune and property of the country" in Japan.

SMAP was regarded as an iconic group in Japan, after achieving an unprecedented level of success in numerous genres in the entertainment industry, including music, television, film, radio, and theater, as a group and individually. SMAP was credited for changing the Japanese entertainment and music industry, in terms of prolonging longevity of boy bands and broadening careers by creating new opportunities for bands that followed. After starting out as a typical boy band, with a fan base predominantly of female teens, they gradually transformed into a band with a wider audience, expanding their fan base to preteens, male adults, and even the elderly, after their success as actors and television personalities.