（山本 耀司、Yamamoto Yōji
, born 3 October 1943) is an internationally known Japanese fashion designer
The style he created "suppresses mode with antimode". He expresses his philosophy and avant-guard spirit in his clothing, frequently creating designs far removed from current trends. Basically, he makes a line characterized by oversized silhouettes; it typically features drapes (loose gathers and tatters) in glossy textures that naturally change with the figure's contours and movement. Often, a single color (particularly black) and a single shade are used. One could say that Youji Yamamoto tries to express himself through his clothing; customers who sympathize with those thoughts and spirit are charmed and become ardent fans.
The charismatic designer's brand, which received high praise both domestically and abroad during the 1980s, side by side with the likes of Rei Kawakubo's Comme des
Garçons and Issey Miyake's Issei Miyake, formed the "DC brand boom". (DC is short for Designers & Characters. It is now called Designers' Brands.)
He currently serves as Takeshi Kitano's costume designer for the likes of Dolls and Zatoichi.