Yong Vui Kong v. Public Prosecutor was a seminal case decided in 2010 by the Court of Appeal of Singapore which, in response to a challenge by Yong Vui Kong, a convicted drug smuggler, held that the mandatory death penalty imposed by the Misuse of Drugs Act (Cap. 185, 2001 Rev. Ed.) ("MDA") for certain drug trafficking offences does not infringe Articles 9(1) and 12(1) of the Constitution of Singapore.