Steve Henderson (1944 - March 8, 2006) was a game designer who contributed to several role-playing game products, including RuneQuest. As Sir Steven MacEanruig, he was one of the founders of the Society for Creative Anachronism. He was also a partner in DunDraCon game convention in San Ramon, California. He wrote the first RuneQuest adventure supplement with assistance from Steve Perrin and Warren James.
He died on March 8, 2006, as the result of a stroke.