Aung Ko Win (Burmese: အောင်ကိုဝင်း; also known as Saya Kyaung) is a Burmese businessman and former schoolteacher. He owns Kanbawza Group of Companies (KBZ), including Kanbawza Bank, Myanmar Billion Group, Nilayoma Co. Limited, East Yoma Co. Limited and agent for London Cigarettes in Shan and Kayah States, and Kanbawza FC.
He is married to Nang Than Htwe, the niece of Win Myint, a former State Peace and Development Council official. He has 3 daughters, Nang Lang Kham (b. 1988), Nang Kham Noung (b. 1991), and Nang Mo Hom (b. 1996). His wife serves as Deputy Chairman of KBZ, while his three daughters serve as directors within the company.
He has close connections to General Maung Aye, the second in command of the former military junta, the State Peace and Development Council (SPDC) While Maung Aye was a commander in jade-mining region of Shan State, Maung Aye offered Aung Ko Win jade and gem mining concessions.