Sui Ma is a fictional character in the Wild Cards series of books. She is among the upper echelons of the Shadow Fist Society, acting as a lieutenant for her brother Kien Phuc. She is one of only a small handful of people who know of Kien Phuc's identity as the leader of the Shadow Fists and has shared a second-in-command position alongside Loophole. As head of the Immaculate Egrets, Sui Ma controls much of the Shadow Fists' interest in the New York drug trade.