She was the first African-American woman to win the Nobel Prize in literature.
Knopf said Morrison passed away at the Montefiore Medical Center in New York.
Morrison worked for 19 years as an editor at Random House, where she had become the first black women appointed to a senior editor role in the fiction department.
Her acclaimed novel ‘Beloved’ was based on the tragic story of a mother who killed her baby to save her from a life of slavery.
She closed her Nobel Prize address with the words: “We die. That may be the meaning of life. But we do language. The may be the measure of our lives.”