This chapter discusses regulations, self-regulation, guidelines and codes of conduct in tourism planning and management. Although often linked, there are important differences between these three terms. As Stonehouse (1990) indicated, regulations usually have some form of legal status while codes of conduct, codes of practice and guidelines, although attempting to regulate tourism, do not have this status. Guidelines, however, are usually based on wellconsidered precepts, indicating a course of action to be followed with the reasoning behind it, while codes of conduct provide sets of rules for behaving in certain circumstances (Stonehouse, 1996). Codes of conduct are usually voluntary, tend to be self-imposed and are designed to act as a form of self-regulation (Mason and Mowforth, 1996). There are few examples of legally backed regulations pertaining speciﬁ cally to tourism but a variety of tourism codes of conduct have been existence for at least 30 years. This chapter therefore focuses on codes of conduct in tourism and the guidelines that often accompany them. The chapter begins by setting codes within the wider context of ethics and morals.