Sir Ian Livingstone is an English fantasy author and entrepreneur. Along with Steve Jackson, he is the co-founder of a series of role-playing gamebooks, Fighting Fantasy, and the author of many books within that series. He co-founded Games Workshop in 1975 and helped create Eidos Interactive as executive chairman of Eidos Plc in 1995.

Games Workshop Group is a British manufacturer of miniature wargames, based in Nottingham, England. Its best-known products are Warhammer and Warhammer 40,000.