Neuromancer — William Gibson (1984)

William Gibson's debut novel invented cyberpunk, coined the word "cyberspace," and depicted a networked global information architecture (the Matrix) 15 years before the internet as we know it existed. Its vision of AI, corporate power, virtual reality, and human augmentation has proven more accurate than any other science fiction of its era and directly inspired The Matrix, Ghost in the Shell, and nearly every hacker aesthetic in culture since.