In proceedings for recognition and enforcement of international arbitral awards, national courts are allowed to apply their own rules of procedure, pursuant to Article III of the New York Convention. However, the application of some of these procedural rules may lead to the award being denied recognition and enforcement, including rules on personal jurisdiction, limitation periods, and forum non conveniens. This comes into conflict with the widespread belief that the grounds for refusing recognition and enforcement that are listed in Article V of the New York Convention are exhaustive. This article challenges the conventional wisdom that the grounds listed in Article V are exhaustive, and argues that a domestic rule of procedure may be used to deny recognition and enforcement where either: the rule in question is widely applied in Contracting States to the New York Convention; or some interest or policy of the forum State would be significantly furthered by the application of that rule.