Company directors, being human, may be tempted to promote their own interests rather than those of the companies on whose boards they serve. Directors are subject to a number of legal duties. A director has a fiduciary duty to act in good faith and in the best interests of the company. A number of other duties flow from this duty such as the duty to avoid a conflict of interests. The duty of a director not to appropriate a corporate opportunity belonging to the company of which he or she is a director, also flows from the duty to avoid a conflict of interests. The common-law duties of directors which have their origins in English law, have developed over a number of years. Because of the difficulty that directors had in establishing what their duties were, a number of jurisdictions embarked on a process of codifying or partially codifying these duties. South Africa, Australia and England are three countries that have promulgated legislation which has resulted in the codification or partial codification of directors’ duties. The purpose of the codification or partial codification of directors’ duties was firstly to clarify the duties of directors, and secondly to make the duties more accessible to those affected by them – the directors of companies. In South Africa the Companies Act 71 of 2008 has partially codified the duties of directors. Because directors’ duties have only been partially codified there is uncertainty regarding their scope. This dissertation will focus on the possible effect of the 2008 Companies Act on the duty of a director not to take a corporate opportunity falling to the company. In this dissertation I address two issues involving the effect of the 2008 Companies Act on the duty of a director not to appropriate a corporate opportunity belonging to the company. Firstly, I consider whether the partially codified directors’ duties are wide enough to cover issues involving the appropriation of corporate opportunities. Secondly, I consider the appropriate common-law test or tests to be applied in determining whether, in the specific circumstances, an opportunity should be classified as a corporate opportunity. In considering whether the partially codified duties of directors are wide enough to include the corporate-opportunity rule, I compare the approach to corporate opportunities and the corporate-opportunity rule in South Africa, Australia and England. / Mercantile Law / LL.M. (Corporation Law)