Wan Kuok-koi (Chinese: 尹國駒; pinyin: Yǐn Guójū; born 1955), popularly known as Broken Tooth Koi (崩牙駒; Cantonese: bung nga keui; Mandarin: bēng yá jū), is a gangster and former leader of the Macau branch of the 14K triad. He was released after more than 14 years in prison on 1 December 2012, and in years following has reportedly been involved in illicit gambling projects in Myanmar associated with illicit drug production and transnational organized crime groups operating in and around the Golden Triangle (Southeast Asia). In December 2020, the U.S. sanctioned Wan under the Global Magnitsky Act.