Yuji Adachi (足立祐二, Adachi Yūji?, born March 10, 1964, in Osaka, Japan), known as You, is a Japanese musician and songwriter. Best known as guitarist of the influential heavy metal band Dead End. He also runs a guitar school.
In 1982 You was a member of Terra Rosa and a year later of Jesus, before joining Dead End in 1986. When Dead End disbanded in 1990, he formed the short-lived Goatcore with Color bassist Marry. You has also worked with Ryuichi Kawamura, Nami Tamaki and Cozy Murakami among others and released a two solo albums. In 2009 Dead End reunited and released an album.