The National Guild of Hypnotists, Inc., is a not-for-profit, educational corporation in the State of New Hampshire. The NGH were established in 1951 by an enthusiastic group of hypnotists and Dr. Rexford L. North, Director of the Hypnotism Center of Boston, MA. Within a short time, local chapters were formed and operating in many major cities throughout the US and Canada. It has now over 14,000 members worldwide.

NGH president, Dr. Dwight F. Damon has made it his mission to do everything possible to have the hypnosis field recognized as a separate and distinct profession. Each year the NGH holds an educational conference in New Hampshire, which is attended by hypnotists from all over the world.