While WTO laws are international treaties and hence part of international law, they were not as such regarded as they are found in that corpus. As a result, the role of other public international law within the WTO dispute settlement is not yet clear. In that whether, the dispute settlement body of the WTO in deciding cases would consult the rules and principles of other public international laws is not well articulated. The paper will examine the applicability of other international laws in the WTO dispute settlement based on the WTO frame work and jurisprudence of international law. Finally, I argue that other international laws can be applied in the settlement of disputes under the WTO in case where they are relevant and proper for the theme.