Structuralism is an intellectual current and methodological approach, primarily in the social sciences, that interprets elements of human culture by way of their relationship to a broader system. It works to uncover the structural patterns that underlie all things that humans do, think, perceive, and feel.

Alternatively, as summarized by philosopher Simon Blackburn, structuralism is:

"The belief that phenomena of human life are not intelligible except through their interrelations. These relations constitute a structure, and behind local variations in the surface phenomena there are constant laws of abstract structure."

The term structuralism is ambiguous, referring to different schools of thought in different contexts. As such, the movement in humanities and social sciences called structuralism relates to sociology. Emile Durkheim based his sociological concept on 'structure' and 'function', and from his work emerged the sociological approach of structural functionalism.

Apart from Durkheim's use of the term structure, the semiological concept of Ferdinand de Saussure became fundamental for structuralism. Saussure conceived language and society as a system of relations. His linguistic approach was also a refutation of evolutionary linguistics.

Structuralism in Europe developed in the early 20th century, mainly in France and the Russian Empire, in the structural linguistics of Ferdinand de Saussure and the subsequent Prague, Moscow, and Copenhagen schools of linguistics. As an intellectual movement, structuralism became the heir to existentialism. After World War II, an array of scholars in the humanities borrowed Saussure's concepts for use in their respective fields. French anthropologist Claude Lévi-Strauss was arguably the first such scholar, sparking a widespread interest in structuralism.

Throughout the 1940s and 1950s, existentialism, such as that propounded by Jean-Paul Sartre, was the dominant European intellectual movement. Structuralism rose to prominence in France in the wake of existentialism, particularly in the 1960s. The initial popularity of structuralism in France led to its spread across the globe. By the early 1960s, structuralism as a movement was coming into its own and some believed that it offered a single unified approach to human life that would embrace all disciplines.

By the late 1960s, many of structuralism's basic tenets came under attack from a new wave of predominantly French intellectuals/philosophers such as historian Michel Foucault, Jacques Derrida, Marxist philosopher Louis Althusser, and literary critic Roland Barthes. Though elements of their work necessarily relate to structuralism and are informed by it, these theorists eventually came to be referred to as post-structuralists. Many proponents of structuralism, such as Lacan, continue to influence continental philosophy and many of the fundamental assumptions of some of structuralism's post-structuralist critics are a continuation of structuralist thinking.