The Third Wave is a 1980 book by Alvin Toffler. It is the sequel to Future Shock (1970), and the second in what was originally likely meant to be a trilogy that was continued with Powershift: Knowledge, Wealth and Violence at the Edge of the 21st Century in 1990. A new addition, Revolutionary Wealth, was published, however, in 2006 and may be considered as a major expansion of The Third Wave.

Alvin Eugene Toffler was an American writer, futurist, and businessman known for his works discussing modern technologies, including the digital revolution and the communication revolution, with emphasis on their effects on cultures worldwide. He is regarded as one of the world's outstanding futurists.