The Science of Getting Rich is a success classic book written by Wallace D. Wattles in 1910. It was a major inspiration for Rhonda Byrne's bestselling book and film The Secret (2006 film).Wattles' work is considered a philosophy of Mental Science or Mind Science which may have preceded the New Thought movement. Wattles published the work during a time of famous self-help founders such as Thomas Troward and Charles F. Haanel.

The book precedes Napoleon Hill and Think and Grow Rich.