Abstract: This essay aims to examine the relationship between prejudice and discrimination on the basis of social dominance theory. Discrimination and prejudice are different concepts that many people experience frequently. Identities which create “we” and “other” are based on personal characteristics such as sex, age, sectarian or ethnic origin. Prejudice we feel for “others”, are the basis of discrimination. It is defined as a thought coming to mind arising from prejudgements while discrimination is behaviour of this prejudice. The theory of social dominance argues that one or more groups are more dominant and stronger than the others in the social structure and control resources. According to the theory, all social structures are prone to become group-based social layers, all societies are composed of hierarchically organized layers. While dominant social groups shape social values and have material resources or significant social symbols, the disadvantaged groups strive to have them. As a consequence, dominant groups have intention to maintain the circumstance by way of discrimination and favoring the inner group. The theory asserts that group-based social hierarchies emerge through aggregated individual discrimination, aggregated institutional discrimination and behavioral asymmetry. In this process, discriminated individuals, while reducing the values of their social identity by recalling that their groups have low position on the one hand, also make discrimination to be seen as the cause of failure instead of personal reasons.