Flow My Tears, the Policeman Said is a 1974 science fiction novel by American writer Philip K. Dick. The novel is set in a futuristic dystopia where the United States has become a police state in the aftermath of a Second American Civil War. The story follows genetically enhanced pop singer and television star Jason Taverner who wakes up in a world where he has never existed.

Philip Kindred Dick, often referred to by his initials PKD, was an American science fiction writer and novelist. He wrote 44 novels and about 121 short stories, most of which appeared in science fiction magazines during his lifetime. His fiction explored varied philosophical and social questions such as the nature of reality, perception, human nature, and identity, and commonly featured characters struggling against elements such as alternate realities, illusory environments, monopolistic corporations, drug abuse, authoritarian governments, and altered states of consciousness. He is considered one of the most important figures in 20th century science fiction.