The American singer, who found fame as part of The Walker Brothers, was 76-years-old.
Walker’s label 4AD said: “It is with great sadness that we announce the death of Scott Walker.
“Scott was 76 years old and is survived by his daughter, Lee, his granddaughter, Emmi-Lee, and his partner Beverly.
“For half a century, the genius of the man born Noel Scott Engel has enriched the lives of thousands, first as one third of The Walker Brothers, and later as a solo artist, producer and composer of uncompromising originality.
“Scott Walker has been a unique and challenging titan at the forefront of British music: audacious and questioning, he has produced works that dare to explore human vulnerability and the godless darkness encircling it.”
The trio hit the big time during the 60s with a string of chart-topping hits including their 1966 single The Sun Ain’t Gonna Shine Anymore.
Walker’s cause of death is yet to be confirmed.
Scott’s self-titled debut solo album was released in 1967 and peaked at number 3 on the UK charts.
The success was quickly repeated by another three albums.
His final body of work was last year on the official soundtrack of Vox Lux.