Project Reason is a U.S. 501(c)(3) foundation whose main aim is the promotion of scientific knowledge and secular values within society.

In 2007, Sam Harris and his wife, Annaka Harris, founded Project Reason. Its website states:

The project will draw on the talents of prominent and creative thinkers from a wide range of disciplines — science, law, literature, entertainment, information technology, etc. — to encourage critical thinking and wise public policy. It will convene conferences, produce films, sponsor scientific research and opinion polls, award grants to other non-profit organizations, and offer material support to religious dissidents and public intellectuals — with the purpose of eroding the influence of dogmatism, superstition and bigotry in the world.

"One immediate need," according to Sam Harris, "is to build an archive of the best secular resources on the Internet. Registered users can submit their favorite articles, videos, interviews, etc." Users are also encouraged to make donations: "The leading religious organizations have operating budgets of over $100 million per year. There is no equivalent organization in the secular world. It may take a while, but you can help us build it!"

Sam Harris may refer to: