Background and Aim: Today, commercial companies have a great desire to resolve their disputes through arbitration. One of the issues that the arbitrator or arbitrators must always pay attention, is the observance of Ethical principles and obligations,Because not paying attention to this issue, on the one hand, can cause the judges to lose trust and, on the other hand, cause the referee's verdict to be annulled. Methods: The present article examines the position of ethics in arbitrating companies' commercial disputes using descriptive-analytical methods and library and other available resources. Ethical Considerations: In all stages of writing the article, honesty and trustworthiness have been observed and all materials taken from other scientific works are accompanied by accurate references to sources. Results: The findings of this article indicate that the observance of Ethical obligations by arbitrators is recognized as the most important basis for the acceptance and legitimacy of this institution in the justice system of any country and Ethical codes are the most important source of Ethical obligations of arbitrators. Also, the most prominent Ethical principles that have been emphasized in the US, British and Australian jurisdictions in corporate litigation or arbitral tribunals are: the principle of independence and impartiality. The principle of disclosure, the principle of confidentiality and the principle of expertise, all of which are discussed in this article. Conclusion: Considering that no Ethical code has been developed in Iran for arbitration in commercial disputes, it is necessary to specify the Ethical standards that arbitrators must follow regardless of existing laws and regulations,Therefore, it seems necessary to prepare a draft code of ethics by institutions such as the Arbitration Center of the Iranian Chamber of Commerce, to judge commercial disputes using the experiences of leading countries in this field such as the United States.