Jack Sarfatti

(born September 14, 1939) is an American theoretical physicist. Working largely outside academia, most of Sarfatti's publications revolve around quantum physics and consciousness.

Sarfatti was a leading member of the Fundamental Fysiks Group, an informal group of physicists in California in the 1970s who, according to historian of science David Kaiser, aimed to inspire some of the investigations into quantum physics that underlie parts of quantum information science. Sarfatti co-wrote Space-Time and Beyond (1975; credited to Bob Toben and Fred Alan Wolf) and has self-published several books.