Michael G. Rubin (born 1972) is an American businessman. He is the Chief Executive Officer of Kynetic, a direct-to-consumer e-commerce company he founded in 2011. He is also Executive Chairman at each of Kynetic's three businesses: Fanatics, the world's leading online seller of licensed sports merchandise; Rue La La, a flash sales site; and ShopRunner, a members-only service for online shoppers. He previously founded GSI Commerce in 1998, selling it on eBay in 2011 for $2.4 billion.