The research aims to explore the extent of legal protection granted to creditors of joint stock company under Omani Commercial Companies Law promulgated in 2019. Considering the significant importance of such legal protection in maintaining rights of individuals and institutions and its distinguished role in maintaining the economy of the country. In view of the fact, that this type of company has became a standard of strength to states, this research will focus on the mechanisms of protection stated by Omani law and identification of those mechanisms, as well as the effectiveness of such protection in protecting rights of creditors and all considerations that were made for it. For achieving the main objective of the research, the researcher has adopted descriptive and analytical approach, considering the fact that these approaches are the best for conducting this research. For the purpose of enriching the research, a comparison has been made between Omani, Saudi and Tunisian law, in addition to the opinion of Omani supreme court in some rules of law. The researcher has reached to a result that the Omani legislator was keen in providing high protection to creditors of joint stock company at all stages of company's life and creditors have been granted full legal protection to their rights with the company. On the other hand, separate rules were dedicated for protection of company's capital considering its the guarantee for creditors. Also the law has made managers of the company legally liable for their faults. As well as the law has made the interest of creditors prevail over the interest of the company in case if contradiction. Key words: shares in kind, company assets, incorporation, dividend distribution, auditor