Francis Gregory Stafford (February 9, 1948 – October 10, 2018) was an American game designer, publisher, and practitioner of shamanism.

[4] Stafford considers his Arthurian chivalric role-playing game King Arthur Pendragon (1985) his masterpiece.

[4] Stafford designed the Prince Valiant roleplaying game (1989), which featured a basis in storytelling along with other innovations.

[3]: 94, 361 Stafford asked Robin Laws to design a new role-playing game based on Glorantha, which became known as Hero Wars, published in 2000 as the first fully professional product for Issaries.

[3]: 363 Hasbro let the RuneQuest trademark lapse, so Stafford picked up the rights to the game and licensed it to Mongoose Publishing to release a new edition in 2006.

Stafford's 1974 board game White Bear and Red Moon had featured the violent struggle between several cultures in the Dragon Pass region of Glorantha.

The heart of the game was a conflict between the barbarian Kingdom of Sartar and the invading Lunar Empire, a theme which has remained central to Gloranthan publications since then.

[11][12] Stafford lived in Mexico for 18 months, tutoring English as a foreign language, and exploring places of archeological and shamanic interest.

[13] In 1999 Pyramid magazine named Greg Stafford one of The Millennium's Most Influential Persons, "at least in the realm of adventure gaming.