"Ethnomethodology," a term coined by the American sociologist Harold Garfi nkel in the 1950s (Garfi nkel 1967 : 11), represents a theoretical paradigm that emerged out of his thinking from the 1940s onward. From its inception, ethnomethodology was infl uenced by and in dialogue with the philosophy of phenomenology, particularly the social phenomenology developed by Alfred Schütz and later popularized by his students. To understand and appreciate the core precepts of ethnomethodology, then, familiarity with the basic features of phenomenology is necessary. At the same time, in tracing the evolution of ethnomethodology and its relationship with phenomenology, we can also see how ethnomethodologists advanced the theories of phenomenologists by grounding many of their fundamental insights in empirical results and "re-specifying" key concepts. As we will see, such re-specifi cation (Garfi nkel 1991 ) entails (re)-describing social phenomena in terms of the observable, concrete, and concerted practices of society's members, or what Garfi nkel calls "members' methods."This chapter has two principal aims. First, it provides a comprehensive overview of classic and contemporary research in ethnomethodology. In this we proceed chronologically, beginning with Garfi nkel's earliest work and then tracking its development, by both Garfi nkel and his students, in the latter part of the twentieth century through to contemporary theoretical and empirical projects in the ethnomethodological tradition. Second, we emphasize the ongoing dialogue and reciprocity between ethnomethodology and social phenomenology. Thus, while our major focus is ethnomethodology, we also review key developments in philosophical and social phenomenology, particularly with respect to their infl uence on Garfi nkel and their re-specifi cation by ethnomethodologists. Accordingly, the chapter starts with a discussion of phenomenology's origins and evolution, its development by Schütz in a sociological direction, and its further development and popularization by his students, most notably Peter Berger and Thomas Luckmann ( 1966 ). Further, as the chapter proceeds, we address contemporary ideas and advances in social phenomenology as these become relevant to our exposition. It is worth noting from the outset, though, that by the 1990s, social phenomenology had largely merged with other microsociological paradigms in a kind of "theoretical syncretism" (Flaherty 2009 ) that variously mixed phenomenology with elements of symbolic interactionism, Goffmanian micro-structuralism, and