Johnson Tan Han Seng v. Public Prosecutor [1977] 2 MLJ 66 is a Malaysian case concerning the lapsing of a Proclamation of Emergency by the Yang di-Pertuan Agong (King). The case was heard by the Federal Court, which unanimously held that the question of a Proclamation of Emergency's validity was political, not judicial, and as such the courts had no standing to decide the validity of a state of emergency.