In the last few decades, the subject of trust has become one of the central research topics in sociology and political science. Various theoretical approaches have crystallized, and an immense amount of empirical data has been collected. The focus on trust is for two kinds of reasons. One has to do with immanent developments in the social sciences. We have witnessed a turn from almost exclusive preoccupation with the macro-social level, that is the organizational, systemic or structuralist images of society, toward the micro-foundations of social life; that is, everyday actions and interactions, including their ‘soft’ dimensions, mental and cultural intangibles and imponderables. Another set of reasons has to do with the changing quality of social structures and social processes in the late-modern period. The ascendance of democracy means that the role of human agency is growing, and more depends on what common people think and do, how they feel toward others and toward their rulers and how they choose to participate and cooperate. The process of globalization means that more and more of the factors impinging on everyday life of people are non-transparent, unfamiliar and distant, demanding new type of attitudes. The expansion of risk means that people have to act more often than before in conditions of uncertainty. The traumas of rapid, comprehensive and often unexpected social change produce disorientation and a loss of existential security. If the ambition of sociology to become the reflexive awareness of society is to be realized, then the current interest in trust seems to be wholly warranted.