Oliver Napoleon Hill (October 26, 1883 – November 8, 1970) was an American self-help author. He is best known for his book Think and Grow Rich (1937), which is among the best-selling self-help books of all time. Hill's works insisted that fervid expectations are essential to improving one's life. Most of his books were promoted as expounding principles to achieve "success".

Dr. Hill’s work stands as a monument to individual achievement and is the cornerstone of modern motivation. His book, Think and Grow Rich, is the all time bestseller in the field. Hill established the Foundation as a nonprofit educational institution whose mission is to perpetuate his philosophy of leadership, self-motivation, and individual achievement. His books, audio cassettes, videotapes, and other motivational products are made available to you as a service of the Napoleon Hill Foundation so that you may build your own library of personal achievement materials, and help you acquire financial wealth and the true riches of life. On August 21, 1962, Dr. Hill and his wife, Annie Lou, founded the Napoleon Hill Foundation to make available in perpetuity the success principles he spent a lifetime identifying and sharing.